DTC P0119 [MZI-3.7 (PCM CONNECTOR (2 TYPES))]

id0102e3817100

DTC P0119

CHT sensor circuit intermittent/erratic

DETECTION CONDITION

•  Indicates the ECT circuit became intermittently open or shorted while the engine was running.

POSSIBLE CAUSE

•  CHT sensor connector or terminal malfunction

•  PCM connector or terminal malfunction

•  Harness malfunction

•  CHT sensor malfunction

•  Low engine coolant

•  PCM malfunction

DTC P0119	CHT sensor circuit intermittent/erratic
DETECTION CONDITION	• Indicates the ECT circuit became intermittently open or shorted while the engine was running.
POSSIBLE CAUSE	• CHT sensor connector or terminal malfunction • PCM connector or terminal malfunction • Harness malfunction • CHT sensor malfunction • Low engine coolant • 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.
1		No	Record FREEZE FRAME DATA on the 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 CONNECTOR FOR POOR CONNECTION • Turn the ignition switch off. • Disconnect PCM connector and CHT sensor connectors. • Inspect for poor connection (such as damaged, pulled-out pins, and corrosion). • Is there any malfunction?	Yes	Repair or replace suspected part, then go to Step 7.
3		No	Go to the next step.
4	INTERMITTENT INSPECTION • Turn the ignition switch to the ON position (Engine off). • Access the PCM and monitor the CHT PID. • While observing the PID, perform the following: ― Tap on the sensor to simulate road shock ― Wiggle the sensor connector • Is there a large change in the voltage reading?	Yes	Inspect the CHT sensor. (See CYLINDER HEAD TEMPERATURE (CHT) SENSOR INSPECTION [MZI-3.7].) Replace if necessary, then go to Step 7.
4		No	Go to the next step.
5	INSPECT ELECTRONIC ENGINE CONTROL (EEC) WIRING HARNESS • Access the PCM and monitor the CHT PID. • While observing the PID, wiggle, shake, and bend small sections of the wiring harness while working from the sensor to the PCM. • Is there a large change in the voltage reading?	Yes	Repair if necessary, then go to Step 7.
5		No	Go to the next step.
6	INSPECT FOR CORRECT PCM OPERATION • Disconnect the PCM connector. • Visually inspect for: ― Pushed out pins ― Corrosion • Connect all the PCM connectors and verify that they seat correctly. • Retrieve DTCs using the M-MDS. • Is the PENDING CODE for this DTC present?	Yes	Go to the next step.
6		No	The system is correctly. Go to the next step.
7	VERIFY TROUBLESHOOTING OF DTC P0119 HAS BEEN COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from memory using the M-MDS. • Start the engine. • Perform the “KOEO/KOER self-test” (See KOEO/KOER SELF TEST [MZI-3.7 (PCM CONNECTOR (2 TYPES))].) • Is same DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [MZI-3.7].)
7		No	Go to the next step.
8	VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [MZI-3.7 (PCM CONNECTOR (2 TYPES))].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [MZI-3.7 (PCM CONNECTOR (2 TYPES))].)
8		No	Troubleshooting completed.