DTC P0117 [AJ] (VIN: JMZ LW19J7*# 300001-, JM0 LW10J300 300001-301405, JM6 LW10J300 300001-, JM8 LW28J**# 300001-301513)

BME010200100210

DTC P0117

ECT circuit low input

DETECTION CONDITION

• The PCM monitors ECT sensor signal at PCM terminal 38. If the PCM detected ECT sensor voltage below 0.14 V the PCM determines that the ECT sensor circuit has malfunction.
Diagnostic support note
• This is a continuous monitor (CCM).
• MIL illuminates if PCM detects the above malfunction condition during first drive cycle.
• PENDING CODE is not available.
• FREEZE FRAME DATA is available.
• DTC is stored in the PCM memory.

POSSIBLE CAUSE

• ECT sensor malfunction
• Short to ground circuit between ECT sensor terminal A and PCM connector terminal 38.
• Short each harness ECT signal circuit and ECT ground circuit.
• PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
• Has FREEZE FRAME DATA been recorded?
Yes
Go to the next step.
No
Record FREEZE FRAME DATA on repair order, then go to the next step.
2
VERIFY RELATED SERVICE INFORMATION AVAILABILITY
• Check for related Service Information availability.
• Is any related Service Information available?
Yes
Perform repair or diagnosis according to available Service Information.
• If vehicle is not repaired, go to the next step.
No
Go to the next step.
3
VERIFY CURRENT INPUT SIGNAL STATUS- IS CONCERN INTERMITTENT OR CONSTANT
• Connect the WDS or equivalent to the DLC-2.
• Turn the ignition switch to the ON position (Engine off).
• Access ECT PID.
• Is ECT PID below 0.14 V?
Yes
Go to the next step.
No
Intermittent concern exists. Go to INTERMITTENT CONCERNS TROUBLESHOOTING procedure.
4
INSPECT TERMINAL BENT
• Turn the ignition switch off.
• Disconnect ECT sensor connector.
• Inspect for bent of ECT sensor terminals A and B (part-side).
• Is there any malfunction?
Yes
Repair or replace the terminal, then go to Step 8.
No
Go to the next step.
5
CLASSIFY ECT SENSOR MALFUNCTION OR HARNESS MALFUNCTION
• Disconnect the ECT sensor connector.
• Turn the ignition switch to the ON position (Engine off).
• Access ECT PID.
• Is ECT PID below 0.14 V?
Yes
Go to the next step.
No
Replace the ECT sensor, then go to Step 8.
6
INSPECT ECT SIGNAL CIRCUIT FOR SHORT TO GROUND
• Turn the ignition switch off.
• Disconnect the PCM connector.
• Inspect for continuity between ECT sensor terminal A (wiring harness-side) and body ground.
• Is there continuity?
Yes
Repair or replace the wiring harness for short to ground, then go to Step 8.
No
Go to the next step.
7
INSPECT IAT CIRCUIT FOR SHORT HARNESSES
• Inspect for continuity between ECT sensor terminal A and B (wiring harness-side).
• Is there continuity?
Yes
Repair or replace the wiring harness for short circuit, then go to the next step.
No
Go to the next step.
8
VERIFY TROUBLESHOOTING OF DTC P0117 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PCM memory using the WDS or equivalent.
• Turn the ignition switch to the ON position (Engine off).
• Is the same DTC present?
Yes
Replace the PCM, then go to the next step.
No
Go to the next step.
9
VERIFY AFTER REPAIR PROCEDURE
• Perform "After Repair Procedure".
• Is there any DTC present?
Yes
Go to the applicable DTC inspection.
No
Troubleshooting completed.