DTC 14


id070200802900

DTC 14

ECT sensor system inspection

POSSIBLE CAUSE
•  ECT sensor malfunction
•  PCM malfunction
•  Open or short circuit in wiring harnesses between ECT sensor connector and PCM connector
•  A/C amplifier malfunction
•  Open circuit in wiring harness between A/C amplifier connector terminal 2O and PCM connector terminal 1AN
•  Short to ground in wiring harness between A/C amplifier connector terminal 2O and PCM connector terminal 1AN

Diagnostic Procedure

STEP

INSPECTION

ACTION

1
VERIFY THAT THE DTC OF THE PCM
•  Connect the M-MDS to the DLC-2.
•  Verify that the DTC of the PCM.
•  Is displayed P0117 or P0118?
Yes
Perform troubleshooting according to the corresponding DTC inspection.
No
Go to the next step.
2
INSPECT ECT SENSOR SIGNAL CIRCUIT
•  Inspect the voltage at the following A/C amplifier terminal (wiring harness side).
―  Terminal 2O (16-pin, ECT sensor input signal)
•  Is the voltage normal?
Yes
Replace the A/C amplifier.
No
Repair the wiring harness.