DTC Troubleshooting: P2185
DTC P2185 : ECT Sensor 2 Circuit High Voltage
DTC Description
Confirmed DTC
Pending DTC
P2185 ECT Sensor 2 Circuit High Voltage
DTC (PGM-FI)
1.
Problem verification:
Problem verification
?1.
Turn the vehicle to the ON mode.
?2.
Check the parameter(s) below with the HDS.
Signal
Threshold
Current conditions
Values
Unit
Values
Unit
ECT SENSOR 2
More than 4.92
V
Do the current condition(s) match the threshold?
2.
Determine possible failure area (ECT sensor 2, others):
Determine possible failure area (ECT sensor 2, others)
?1.
Turn the vehicle to the OFF (LOCK) mode.
?2.
Disconnect the following connector.
ECT sensor 2 2P connector
?3.
Connect terminals A and B with a jumper wire.
Terminal A
ECT sensor 2 2P connector (female terminals) No. 1:
Terminal B
ECT sensor 2 2P connector (female terminals) No. 2:
?4.
Turn the vehicle to the ON mode.
?5.
Check the parameter(s) below with the HDS.
Signal
Threshold
Current conditions
Values
Unit
Values
Unit
ECT SENSOR 2
More than 4.92
V
Do the current condition(s) match the threshold?
3.
Determine possible failure area (TW2/TW2 SENSOR line, others):
Determine possible failure area (TW2/TW2 SENSOR line, others)
?1.
Turn the vehicle to the OFF (LOCK) mode.
?2.
Remove the jumper wire from the ECT sensor 2 2P connector.
?3.
Turn the vehicle to the ON mode.
?4.
Measure the voltage between test points 1 and 2.
Test condition
Vehicle ON mode
ECT sensor 2 2P connector: disconnected
Test point 1
ECT sensor 2 2P connector (female terminals) No. 2:
Test point 2
Body ground
Is there about 5.0 V?
4.
Open wire check (SG6 line):
Open wire check (SG6 line)
?1.
Turn the vehicle to the OFF (LOCK) mode.
?2.
Jump the SCS line with the HDS, and wait more than 1 minute.
SCS Short
?3.
Disconnect the following connector.
?4.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
ECT sensor 2 2P connector: disconnected
PCM connector E (80P): disconnected
Test point 2
ECT sensor 2 2P connector (female terminals) No. 1:
Test point 1
Is there continuity?
The SG6 wire is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or
substitute a known-good PCM .?
Repair an open in the SG6 wire between the PCM (E45) and ECT sensor 2.?
5.
Open wire check (TW2/TW2 SENSOR line):
Open wire check (TW2/TW2 SENSOR line)
?1.
Turn the vehicle to the OFF (LOCK) mode.
?2.
Jump the SCS line with the HDS, and wait more than 1 minute.
SCS Short
?3.
Disconnect the following connector.
?4.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
ECT sensor 2 2P connector: disconnected
PCM connector E (80P): disconnected
Test point 1
ECT sensor 2 2P connector (female terminals) No. 2:
Test point 2
Is there continuity?
The TW2/TW2 SENSOR wire is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or
substitute a known-good PCM .?
Repair an open in the TW2/TW2 SENSOR wire between the PCM (E54) and ECT sensor 2.?