Fuel and Emissions Systems Symptom Troubleshooting - Engine stalls
Engine stalls
Special Tools Required
Vacuum Pump/Gauge, 0?30 inHg Snap-on YA4000A or equivalent, commercially available
NOTE:
Before beginning this troubleshooting, do a customer diagnostic interview.
?
When the symptom cannot be duplicated, you can do the troubleshooting using the on-board snapshot information in this procedure. Refer to the diagnostic interview (date, place) and the present total mileage, and compare the total mileage which is estimated from the interview when a failure occurred and the parameter (total mileage) in the on-board snapshot information. Make sure the date when the failure occurred corresponds with the date on which the on-board snapshot information was recorded. If it doesn't, the on-board snapshot information cannot be used in this troubleshooting.
Before beginning this troubleshooting:
?
Make sure the 12 volt battery is fully charged.
?
Make sure the fuel tank is at least 1/4 full.
?
Make sure the engine oil level is correct.
After the troubleshooting, reset the PCM with the HDS to erase the on-board snapshot information recorded on the PCM.
1.
DTC check:

DTC check
?1.
Turn the vehicle to the ON mode.

?2.
Check for Pending or Confirmed DTCs with the HDS.
DTC Description
Confirmed DTC
Pending DTC
     


Are any Pending or Confirmed DTCs indicated?

     
YES
     
     
     
Go to the indicated DTCs troubleshooting.?
     
NO
     
     
     
Go to step 2.
NOTE: If the HDS does not communicate with the vehicle, go to the PCM power and ground circuit troubleshooting.
2.
Body electrical system DTC check:

Body electrical system DTC check
?1.
Check for body electrical system DTCs with the HDS.
DTC Description
DTC
   


Are any DTCs indicated?

     
YES
     
     
     
     
NO
     
     
     
Go to step 3.
3.
Problem verification:

Problem verification
?1.
Set the HDS to record a SNAPSHOT of following parameters for 30 seconds.
ENGINE SPEED
MAF SENSOR
ECT SENSOR 1
BATTERY
CKP NO PULSE
CKP NOISE
FUEL PRESSURE CONVERTED FROM PF SENSOR
FUEL PRESSURE DIRECT INJECTION SYSTEM
AF FB (ST FUEL TRIM)
EVAP PC DUTY
MISFIRE
A/C CLUTCH
PNP SWITCH
SLIP RATIO OF TORQ OR STARTCLUTCH

?2.
Begin the snapshot, then start the engine and let it idle without load (in P or N).

Did the engine stall?

     
YES
     
     
     
Go to step 5 (diagnosis by parameter (MAF SENSOR)).
     
NO
     
     
     
Go to step 4.
4.
On-board snapshot check:

On-board snapshot check
?1.
Check for a record of Engine Stall 2 in the on-board snapshot with the HDS.


Is there an Engine Stall 2 record in the on-board snapshot?

     
YES
     
     
     
Go to step 5 (diagnosis by parameter (MAF SENSOR)).
     
NO
     
     
     
Go to step 17 (fuel system troubleshooting).
NOTE: If an engine stall on-board snapshot was not found, the snapshot may have been lost due to low 12 volt battery voltage or because of 12 volt battery disconnection or replacement.
5.
On-board snapshot check (MAF SENSOR):

On-board snapshot check (MAF SENSOR)
NOTE: Use the on-board snapshot in the case of an intermittent failure, or use the snapshot in the case of reproducible failure.

?1.
Check for a record of Engine Stall 2 in the on-board snapshot or the recorded snapshot with the HDS.


?2.
Select the MAF SENSOR and ENGINE SPEED in the configuration list.
Check the recorded snapshot or on-board snapshot parameters at the time of the engine stall, then compare the MAF SENSOR pattern from the charts, and determine the problem.

Pattern
Symptom (Diagnosis by parameter)
Additional remarks
Pattern 1
Poor connection of MAF SENSOR
If the engine stalls 1 - 2 seconds after MAF SENSOR shows "0" g/s the engine stall may be caused by a faulty MAF sensor, poor connection, or electrical noise in the MAF sensor signal.
Pattern 2
MAF SENSOR normal
When the MAF SENSOR pattern matches ENGINE SPEED, the MAF sensor is normal.

Which pattern is indicated?

     
Pattern 1
     
     
     
Check MAF sensor/IAT sensor 1 for loose terminals or poor connections. If the terminals and connections are OK, substitute a known-good MAF sensor/IAT sensor 1.?
     
Pattern 2
     
     
     
Go to step 6 (diagnosis by parameter (ECT SENSOR 1)).
6.
On-board snapshot check (ECT SENSOR 1):

On-board snapshot check (ECT SENSOR 1)
NOTE: Use the on-board snapshot in the case of an intermittent failure, or use the snapshot in the case of a reproducible failure.

?1.
Check for a record of Engine Stall 2 in the on-board snapshot or the recorded snapshot with the HDS.


?2.
Select the ECT SENSOR 1 and ENGINE SPEED in the configuration list.
Check the recorded snapshot or on-board snapshot parameters at the time of the engine stall, then compare ECT SENSOR 1 pattern from the charts, and determine the problem.

Pattern
Symptom (Diagnosis by parameter)
Additional remarks
Pattern 1
ECT SENSOR 1 high
When ECT SENSOR 1 indicates about 176 °F (80 °C) or more when the engine is actually cold, ECT sensor 1 signal may be stuck high. If this occurs, the PCM may not properly compensate for cold engine operation, causing the engine to stall.
Pattern 2
ECT SENSOR 1 normal
If actual engine temp is similar to ECT SENSOR 1, ECT sensor 1 is normal.

Which pattern is indicated?

     
Pattern 1
     
     
     
Check for a short in the ECT sensor 1 circuit and a failure in ECT sensor 1.?
     
Pattern 2
     
     
     
Go to step 7.
7.
ECT sensor 1 check:

ECT sensor 1 check
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Let the engine cool for 24 hours.

?3.
Measure the ambient temperature of the engine with the thermometer.

?4.
Turn the vehicle to the ON mode, but do not start the engine.

?5.
Check the parameter(s) below with the HDS.
Signal
Current conditions
Values
Unit
ECT SENSOR 1
    
ECT SENSOR 2
    

Are the values of ECT SENSOR 1, ECT SENSOR 2, and the ambient temperature almost the same?

     
YES
     
     
     
Go to step 8 (diagnosis by parameter (BATTERY)).
     
NO
     
     
     
If the value of ECT SENSOR 1 is much higher (or lower) than that of ECT SENSOR 2 and the ambient temperature, check for the ECT sensor 1 circuit and a failure in ECT sensor 1.?
8.
On-board snapshot check (BATTERY):

On-board snapshot check (BATTERY)
NOTE: Use the on-board snapshot in the case of an intermittent failure, or use the snapshot in the case of a reproducible failure.

?1.
Check for a record of Engine Stall 2 in the on-board snapshot or the recorded snapshot with the HDS.


?2.
Select the BATTERY and ENGINE SPEED in the configuration list.
Check the recorded snapshot or on-board snapshot parameters at the time of the engine stall, then compare the BATTERY pattern from the charts, and determine the problem.

Pattern
Symptom (Diagnosis by parameter)
Additional remarks
Pattern 1
BATTERY voltage low
When the BATTERY voltage is excessively low, the PCM or control unit stops functioning, causing engine stall.
For PCM or each control unit to start (functioning), more than 7.0 V is needed.
Pattern 2
BATTERY voltage normal
If the BATTERY voltage is above 12 V when the engine stalls, the 12 volt battery is normal.

Which pattern is indicated?

     
Pattern 1
     
     
     
Test the 12 volt battery, and check the 12 volt battery cables and terminals.?
     
Pattern 2
     
     
     
Go to step 9 (diagnosis by parameter (CKP NO PULSE)).
9.
On-board snapshot check (CKP NO PULSE):

On-board snapshot check (CKP NO PULSE)
NOTE: Use the on-board snapshot in the case of an intermittent failure, or use the snapshot in the case of a reproducible failure.

?1.
Check for a record of Engine Stall 2 in the on-board snapshot or the recorded snapshot with the HDS.


?2.
Select the CKP NO PULSE and ENGINE SPEED in the configuration list.
Check the recorded snapshot or on-board snapshot parameters at the time of the engine stall, then compare the CKP NO PULSE pattern from the charts, and determine the problem.

Pattern
Symptom (Diagnosis by parameter)
Additional remarks
Pattern 1
Count is continuously up
When CKP NO PULSE counts go up, the PCM is not receiving the CKP sensor signal.
Pattern 2
Count is continuously not up

  

Which pattern is indicated?

     
Pattern 1
     
     
     
     
Pattern 2
     
     
     
Go to step 10 (diagnosis by parameter (CKP NOISE)).
10.
On-board snapshot check (CKP NOISE):

On-board snapshot check (CKP NOISE)
NOTE: Use the on-board snapshot in the case of an intermittent failure, or use the snapshot in the case of a reproducible failure.

?1.
Check for a record of Engine Stall 2 in the on-board snapshot or the recorded snapshot with the HDS.


?2.
Select the CKP NOISE and ENGINE SPEED in the configuration list.
Check the recorded snapshot or on-board snapshot parameters at the time of the engine stall, then compare the CKP NOISE pattern from these charts, and determine the problem.

Pattern
Symptom (Diagnosis by parameter)
Additional remarks
Pattern 1
Count is continuously up
When CKP NOISE counts go up, the PCM is receiving electrical noise along with the CKP sensor signal.
Pattern 2
Count is continuously not up

  

Which pattern is indicated?

     
Pattern 1
     
     
     
     
Pattern 2
     
     
     
Go to step 11 (diagnosis by parameter (FUEL PRESSURE CONVERTED FROM PF SENSOR and FUEL PRESSURE DIRECT INJECTION SYSTEM)).
11.
On-board snapshot or snapshot check (FUEL PRESSURE CONVERTED FROM PF SENSOR and FUEL PRESSURE DIRECT INJECTION SYSTEM):

On-board snapshot or snapshot check (FUEL PRESSURE CONVERTED FROM PF SENSOR and FUEL PRESSURE DIRECT INJECTION SYSTEM)
NOTE: Use the on-board snapshot in the case of an intermittent failure, or use the snapshot in the case of a reproducible failure.

?1.
Check for a record of Engine Stall 2 in the on-board snapshot or the recorded snapshot with the HDS.


?2.
Select the FUEL PRESSURE CONVERTED FROM PF SENSOR, FUEL PRESSURE DIRECT INJECTION SYSTEM, and ENGINE SPEED in the configuration list.
Check the recorded snapshot or on-board snapshot parameters at the time of the engine stall, then compare the FUEL PRESSURE CONVERTED FROM PF SENSOR and FUEL PRESSURE DIRECT INJECTION SYSTEM patterns from these charts, and determine the problem.

Pattern
Symptom (Diagnosis by parameter)
Additional remarks
Pattern 1
FUEL PRESSURE CONVERTED FROM PF SENSOR drops to almost 0 kPa before engine stalls
If the FUEL PRESSURE CONVERTED FROM PF SENSOR drops to almost 0 kPa before engine stall, the engine stall may be caused by low fuel pressure.
Fuel leak, out of fuel
Fuel rail pressure sensor failure
Spill valve stuck off
Fuel pressure regulator (low pressure side)
Fuel pump (low pressure side)
High pressure fuel pump
Pattern 2
Normal when the FUEL PRESSURE CONVERTED FROM PF SENSOR is nearly the same as the FUEL PRESSURE DIRECT INJECTION SYSTEM.
If the FUEL PRESSURE CONVERTED FROM PF SENSOR is nearly the same as the FUEL PRESSURE DIRECT INJECTION SYSTEM when engine stalls, the fuel pressure is normal.

Which pattern is indicated?

     
Pattern 1
     
     
     
     
Pattern 2
     
     
     
Go to step 12 (diagnosis by parameter (AF FB (ST FUEL TRIM))).
12.
On-board snapshot check (AF FB (ST FUEL TRIM)):

On-board snapshot check (AF FB (ST FUEL TRIM))
NOTE: Use the on-board snapshot in the case of an intermittent failure, or use the snapshot in the case of a reproducible failure.

?1.
Check for a record of Engine Stall 2 in the on-board snapshot or the recorded snapshot with the HDS.


?2.
Select the AF FB (ST FUEL TRIM), EVAP PC DUTY, and ENGINE SPEED in the configuration list.
Check the recorded snapshot or on-board snapshot parameters at the time of the engine stall, then compare the AF FB (ST FUEL TRIM) pattern from the charts, and determine the problem.

Pattern
Symptom (Diagnosis by parameter)
Additional remarks
Pattern 1
Engine stalls while AF FB (ST FUEL TRIM) value increases
If the AF FB (ST FUEL TRIM) value increases when the engine stalls, there may be a lean condition.
Pattern 2
Normal when the engine stalls when AF FB (ST FUEL TRIM) is around 1.0 (center value)
The fuel trim is normal when the engine stalled with AF FB (ST FUEL TRIM) around 1.0 (center value).
Pattern 3
Engine stalls when AF FB (ST FUEL TRIM) is around 0.8
When the value of AF FB (ST FUEL TRIM) is around 0.8, the PCM commands the EVAP canister purge valve to close (closed when EVAP PC DUTY is 0 %). If the AF FB (ST FUEL TRIM) does not move toward 1.0, the PCS may be leaking.
Pattern 4
Normal when the engine stalls with AF FB (ST FUEL TRIM) is around 1.0 (center value)
When the value of AF FB (ST FUEL TRIM) is around 0.8, the PCM commands the EVAP canister purge valve to close (closed when EVAP PC DUTY is 0 %). If the AF FB (ST FUEL TRIM) moves toward 1.0, the PCS is normal (no leaks).

Which pattern is indicated?

     
Pattern 1
     
     
     
Diagnostic procedure:?
1.
Check the fuel pump operation sound.
2.
Go to the fuel pressure test.
3.
Go to the fuel pump circuit troubleshooting.
4.
Test the relay circuit board (PGM-FI main relay 1 circuit).
5.
Test PGM-FI main relay 2.
6.
Check the following fuses:
No. A7 (15 A) fuse (in the under-hood fuse/relay box)
No. D8 (15 A) fuse (in the under-dash fuse/relay box)
     
Pattern 3
     
     
     
Check the EVAP canister purge valve for leaks.?
     
Pattern 2 and 4
     
     
     
Go to step 13 (diagnosis by parameter (MISFIRE)).
13.
On-board snapshot check (MISFIRE):

On-board snapshot check (MISFIRE)
NOTE: Use the on-board snapshot in the case of an intermittent failure, or use the snapshot in the case of a reproducible failure.

?1.
Check for a record of Engine Stall 2 in the on-board snapshot or the recorded snapshot with the HDS.


?2.
Select the MISFIRE and ENGINE SPEED in the configuration list.
Check the recorded snapshot or on-board snapshot parameters at the time of the engine stall, then compare those snapshots to the MISFIRE pattern from the charts, and determine the problem.

Pattern
Symptom (Diagnosis by parameter)
Additional remarks
Pattern 1
Engine stalls after MISFIRE counts go up
When engine stalls after MISFIRE count increases, the engine stall may be caused by misfire.
Pattern 2
Normal when engine stalls with MISFIRE count remaining constant
If the MISFIRE count remains steady when the engine stalls, the stall was not caused by misfire.

Which pattern is indicated?

     
Pattern 1
     
     
     
Diagnostic procedure:?
1.
If misfire counts go up without storing misfire DTC P0300 - P0304, go to the troubleshooting for DTC P0300 - P0304.
2.
If the misfire count reaches the malfunction threshold, DTC P0300 - P0304 is stored. Go to the troubleshooting for DTC P0300 - P0304.
     
Pattern 2
     
     
     
Go to step 14 (diagnosis by parameter (A/C CLUTCH)).
14.
On-board snapshot check (A/C CLUTCH):

On-board snapshot check (A/C CLUTCH)
NOTE: Use the on-board snapshot in the case of an intermittent failure, or use the snapshot in the case of a reproducible failure.

?1.
Check for a record of Engine Stall 2 in the on-board snapshot or the recorded snapshot with the HDS.

?2.
Select the A/C CLUTCH and ENGINE SPEED in the configuration list.
Check the recorded snapshot or on-board snapshot parameters at the time of the engine stall, then compare the A/C CLUTCH pattern from the charts, and determine the problem.

Pattern
Symptom (Diagnosis by parameter)
Additional remarks
Pattern 1
Engine stalls when A/C CLUTCH is ON.
If the engine stall occurs just after the A/C compressor clutch turns on, the stall may be caused by excessive A/C compressor load.
Pattern 2
Engine stalls during A/C CLUTCH is OFF.
If the engine stall occurs just when the A/C compressor clutch is off, the A/C system is not the cause of the engine stall.

Which pattern is indicated?

     
Pattern 1
     
     
     
Diagnostic procedure:?
1.
Check for over-charge A/C refrigerant.
2.
Check for charging with the wrong refrigerant.
3.
Check for drag of the A/C compressor and A/C compressor clutch.
     
Pattern 2
     
     
     
Go to step 15 (diagnosis by parameter (PNP SWITCH)).
15.
On-board snapshot check (PNP SWITCH):

On-board snapshot check (PNP SWITCH)
NOTE: Use the on-board snapshot in the case of an intermittent failure, or use the snapshot in the case of a reproducible failure.

?1.
Check for a record of Engine Stall 2 in the on-board snapshot or the recorded snapshot with the HDS.


?2.
Select the PNP SWITCH and ENGINE SPEED in the configuration list.
Check the recorded snapshot or on-board snapshot parameters at the time of the engine stall, then compare the PNP SWITCH pattern from the charts, and determine the problem.

Pattern
Symptom (Diagnosis by parameter)
Additional remarks
Pattern 1
Transmission is in-gear condition
In-gear condition when PNP SWITCH is “GEAR”. Engine stall may be caused by transmission.
(Engine also is a factor)
Pattern 2
Transmission is N or P condition
N or P condition when PNP SWITCH is “P-N”. The engine stall is not caused by transmission.

Transmission is not faulty.

Which pattern is indicated?

     
Pattern 1
     
     
     
Go to step 16 (diagnosis by parameter (SLIP RATIO OF TORQ OR STARTCLUTCH)).
     
Pattern 2
     
     
     
Go to step 17 (fuel system troubleshooting).
16.
On-board snapshot check (SLIP RATIO OF TORQ OR STARTCLUTCH):

On-board snapshot check (SLIP RATIO OF TORQ OR STARTCLUTCH)
NOTE: Use the on-board snapshot in the case of an intermittent failure, or use the snapshot in the case of a reproducible failure.

?1.
Check for a record of Engine Stall 2 in the on-board snapshot or the recorded snapshot with the HDS.


?2.
Select the SLIP RATIO OF TORQ OR STARTCLUTCH, ENGINE SPEED, and VEHICLE SPEED in the configuration list.
Check the recorded snapshot or on-board snapshot parameters at the time of the engine stall, then compare the SLIP RATIO OF TORQ OR STARTCLUTCH pattern from the charts, and determine the problem.

Pattern
Symptom (diagnosis by parameter)
Additional remarks
Pattern 1
Engine stall caused by lock-up
When engine stalls, SLIP RATIO OF TORQ OR STARTCLUTCH is near 100 % from deceleration to stopping, the engine stall is caused by lock-up.
Pattern 2
Lock-up normal
Lock-up is normal when engine stalls with SLIP RATIO OF TORQ OR STARTCLUTCH near “0” in the middle of deceleration.

Which pattern is indicated?

     
Pattern 1
     
     
     
     
Pattern 2
     
     
     
Go to step 17 (fuel system troubleshooting).
17.
Fuel pressure check (low pressure side):

Fuel pressure check (low pressure side)
?1.
Do the fuel pressure test.

Is the fuel pressure OK?

     
YES
     
     
     
Go to step 18 (ignition system troubleshooting).
     
NO
     
     
     
18.
Spark plug visual check:

Spark plug visual check
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Remove the spark plugs.

?3.
Check the condition of the spark plug electrodes.
NOTE: Make sure the spark plugs are the correct part number for the vehicle. If the plugs are aftermarket or they are not the correct part number, replace all of the plugs and retest.

Is the electrode damaged or wet?

     
YES (wet)
     
     
     
Check the following conditions. If those conditions do not apply, go to step 19.
In very cold conditions, multiple very short trips can cause the spark plug to foul. If this is the case, drive the vehicle a longer distance and recheck.?
Incorrect or poor quality fuel can cause a wet spark plug. Replace the fuel and recheck.?
     
YES (damaged)
     
     
     
Replace the damaged spark plugs, determine the cause of the spark plug damage.?
     
NO
     
     
     
Go to step 19.
19.
Determine possible failure area (ignition system, others):

Determine possible failure area (ignition system, others)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Fit a spark plug to the ignition coil and ground it to the engine.

?3.
Turn the vehicle to the ON mode.

?4.
Select ALL INJECTORS STOP in the INSPECTION MENU with the HDS, and stop fuel injection from the injector.

  

?5.
Crank the engine and watch for spark at the spark plugs.

Do the spark plugs spark?

     
YES
     
     
     
Select PCM reset in the PGM-FI INSPECTION MENU to cancel ALL INJECTORS STOP with the HDS, then go to step 21 (engine compression troubleshooting).
     
NO
     
     
     
Go to step 20.
20.
Ignition coil power circuit check:

Ignition coil power circuit check
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector(s).
Ignition coil(s) 3P connector from the problem cylinder

?3.
Turn the vehicle to the ON mode.

?4.
Measure the voltage between test points 1 and 2.
Test condition
Vehicle ON mode
 
Ignition coil 3P connector (problem cylinder): disconnected
Test point 1
Ignition coil 3P connector (female terminal) No. 1:
Test point 2
Body ground


Is there battery voltage?

     
YES
     
     
     
The ignition coil power circuit is OK. Replace the ignition coil(s).?
     
NO
     
     
     
Repair an open in the IG COIL RLY OUT/IG1(COIL)/IG1(IGN) wire between the relay circuit board and the ignition coil.?
21.
Engine compression check:

Engine compression check
?1.
Do an engine compression inspection.

Is the engine compression OK?

     
YES
     
     
     
Go to step 22 (EVAP canister purge valve check).
     
NO
     
     
     
Check for wear or damage to these parts:?
Incorrect valve clearance
Confirmation of cam timing
Oil pressure relief valve
Damage or worn cam lobes
Damage or worn valve and seats
Damage cylinder head gasket
Damage or worn piston rings
Damage or worn piston and cylinder bore
22.
EVAP canister purge valve check:

EVAP canister purge valve check
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
EVAP canister purge valve 2P connector

?3.
Remove the EVAP canister purge valve with its vacuum hose connected.

?4.
Disconnect the vacuum hose (purge line) (A) from the EVAP canister purge valve (B) in the engine compartment, and connect a vacuum pump/gauge, 0?30 inHg (C) to the purge valve.


?5.
Start the engine.

Does the vacuum pump indicate vacuum?

     
YES
     
     
     
When the climate is warm, fuel vapor from the canister line to the fuel tank enters intake manifold, enriching mixture (excessively rich), causing the engine to stall in some cases. If needed, replace the EVAP canister purge valve.?
     
NO (Reproducible failure)
     
     
     
Go to step 23 (fuse check).
     
NO (Intermittent failure)
     
     
     
Go to step 24 (relay check).
23.
Fuse check:

Fuse check
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Check the following fuses.
Fuse
No. A7 (15 A) to relay circuit board (PGM-FI main relay 1 circuit)
No. A15 (15 A) to relay circuit board (ignition coil relay circuit)
No. A8 (15 A) to relay circuit board (PGM-FI subrelay circuit)
No. A10 (20 A) to injector relay
Location
Under-hood fuse/relay box

Fuse
No. D8 (15 A) to PGM-FI main relay 2
Location
Under-dash fuse/relay box

Are the fuses OK?

     
YES
     
     
     
Go to step 24 (relay check).
     
NO
     
     
     
Replace the blown fuse(s).?
24.
Relay check:

Relay check
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Test the following relays:
NOTE: In situations where the failure is difficult to reproduce, the following relays may have an intermittent failure.


Are the relay circuit board and the relays OK?

     
YES
     
     
     
Go to step 25 (power and ground terminal check).
     
NO
     
     
     
Replace any damaged relay(s).?
25.
Power and ground terminal check:

Power and ground terminal check
?1.
Check the corrosion and looseness at the following terminals:
12 volt battery terminals
Ground cable terminals between the engine and the body ground, and the transmission and the body ground
Engine wire harness ground (G101, G102)

Are the terminals OK?

     
YES
     
     
     
Go to step 26 (connector terminal check).
     
NO
     
     
     
Repair any terminal(s) as needed.?
26.
Connector terminal check:

Connector terminal check
?1.
Check the foreign objects clogged and corrosion at the following connector terminals:
PCM connectors
?
FI MAIN RLY OUT, FI MAIN RLY CL-
?
FUEL PUMP RLY CL-
?
INJ RLY OUT
?
FI SUB RLY OUT, FI SUB RLY CL-, +B VBACT
?
GND2, FI ECU GND, GND3, GND4, INJ GND1, INJ GND2
?
INJH1, INJL1, INJH2, INJL2, INJH3, INJL3, INJH4, INJL4
?
IGN01, IGN02, IGN03, IGN04
?
HPUMP H, HPUMP L
?
TDCAM
?
CRKP
?
PB
?
FGP
?
TW
?
IPV
?
MTR1, MTR2, THL1, THL2
CMP sensor A
CKP sensor
Ignition coils
Injectors
High pressure fuel pump
ECT sensor 1
MAF sensor/IAT sensor 1
MAP sensor
Throttle body
EVAP canister purge valve
Fuel tank unit

Are the terminals OK?

     
YES
     
     
     
     
NO
     
     
     
Repair any terminal(s) as needed.?