DTC P0118:00 [L3 Turbo]

DTC P0118:00 [L3 Turbo]SM2444085

DTC P0118:00 [L3 Turbo]

id0102b7701700

DTC P0118:00	ECT sensor circuit high input
DETECTION CONDITION	• The PCM monitors the ECT sensor signal. If the PCM detects the ECT sensor voltage is above 4.59 V for 5 s, the PCM determines that the ECT sensor circuit has a malfunction. Diagnostic support note • This is a continuous monitor (engine cooling system). • The MIL illuminates if the PCM detects the above malfunction condition during first drive cycle. • FREEZE FRAME DATA (Mode 2)/Snapshot data is available. • DTCs are stored in the PCM memory.
POSSIBLE CAUSE	• ECT sensor connector or terminals malfunction • ECT sensor malfunction • PCM connector or terminals malfunction • Short to power supply in wiring harness between ECT sensor terminal A and PCM terminal 2AH • Open circuit in wiring harness between the following terminals: ― ECT sensor terminal A—PCM terminal 2AH ― ECT sensor terminal B—PCM terminal 2AY • PCM malfunction

Diagnostic procedure

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA (MODE 2)/SNAPSHOT DATA AND DIAGNOSTIC MONITORING TEST RESULTS HAVE BEEN RECORDED • Have the snapshot data and DIAGNOSTIC MONITORING TEST RESULTS (engine cooling system related) been recorded?	Yes	Go to the next step.
1		No	Record the FREEZE FRAME DATA (Mode 2)/snapshot data and DIAGNOSTIC MONITORING TEST RESULTS on repair order, then go to the next step.
2	VERIFY RELATED SERVICE INFORMATION AVAILABILITY • Verify related Service Information availability. • Is any related Service Information available?	Yes	Perform repair or diagnosis according to the available Service Information. • If the vehicle is not repaired, go to the next step.
2		No	Go to the next step.
3	INSPECT ECT SENSOR CONNECTOR CONDITION • Turn the ignition switch off. • Disconnect the ECT sensor connector. • Inspect for poor connection (such as damaged/pulled-out pins, and corrosion). • Is there any malfunction?	Yes	Repair or replace the connector and/or terminals, then go to Step 8.
3		No	Go to the next step.
4	CLASSIFY ECT SENSOR MALFUNCTION OR WIRING HARNESS MALFUNCTION • ECT sensor connector is disconnected. • Access the ECT PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [L3 Turbo].) • Connect a jumper wire between ECT sensor terminals A and B (wiring harness-side). • Verify the ECT PID value. • Is the voltage 4.6 V or below?	Yes	Replace the ECT sensor, then go to Step 8. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [L3 Turbo].)
4		No	Go to the next step.
5	INSPECT PCM CONNECTOR CONDITION • Turn the ignition switch off. • Disconnect the PCM connector. • Inspect for poor connection (such as damaged/pulled-out pins, and corrosion). • Is there any malfunction?	Yes	Repair or replace the connector and/or terminals, then go to Step 8.
5		No	Go to the next step.
6	INSPECT ECT SENSOR SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY • ECT sensor and PCM connectors are disconnected. • Turn the ignition switch to the ON position (engine off). • Measure the voltage at the ECT sensor terminal A (wiring harness-side). • Is there any voltage?	Yes	Repair or replace the wiring harness for a possible short to power supply, then go to Step 8.
6		No	Go to the next step.
7	INSPECT ECT SENSOR CIRCUIT FOR OPEN CIRCUIT • ECT sensor and PCM connectors are disconnected. • Turn the ignition switch off. • Inspect for continuity between the following terminals (wiring harness-side): ― ECT sensor terminal A—PCM terminal 2AH ― ECT sensor terminal B—PCM terminal 2AY • Is there continuity?	Yes	Go to the next step.
7		No	Repair or replace the wiring harness for a possible open circuit, then go to the next step.
8	VERIFY DTC TROUBLESHOOTING COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the M-MDS. (See AFTER REPAIR PROCEDURE [L3 Turbo].) • Start the engine. • Perform the KOEO or KOER self test. (See KOEO/KOER SELF TEST [L3 Turbo].) • Is the same DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [L3 Turbo].)
8		No	Go to the next step.
9	VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [L3 Turbo].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [L3 Turbo].)
9		No	DTC troubleshooting completed.