Diagnostic Procedure

STEP	INSPECTION		ACTION
1	Start the engine. Does the water temperature gauge needle move to medium range gradually and stay there?	Yes	Troubleshooting completed. (The system is normal.)
1		No	Go to the next step.
2	Retrieve the DTC of PCM using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [MZR 2.5] .) (See ON-BOARD DIAGNOSTIC TEST [MZI 3.7 V6] .) Is there any DTC retrieved?	Yes	Go to applicable troubleshooting procedure. (See DTC TABLE [MZR 2.5] .) (See DTC TABLE [MZI 3.7 V6] .)
2		No	Go to the next step.
3	Start the engine. Verify that the tachometer and speedometer indications. Do the tachometer and heat gauge work properly?	Yes	Go to the next step.
3		No	Go to Step 5.
4	Verify that the heat gauge indication when following commands are send to instrument cluster using M-MDS active command modes ECT_GAUGE. (See ACTIVE COMMAND MODES TABLE [INSTRUMENT CLUSTER] .) Does the water temperature gauge move according to active command modes?	Yes	Verify that the PCM is connected securely. If the PCM is poor connection: Connect the connector securely. If malfunction is in the PCM side connector: Replace PCM. (See PCM REMOVAL/INSTALLATION [MZR 2.5] .) (See PCM REMOVAL/INSTALLATION [MZI 3.7 V6] .) If malfunction is in vehicle side connector: Repair or replace malfunctioning part.
4		No	Replace the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION .)
5	Retrieve the DTC of instrument cluster using the M-MDS. (See DTC INSPECTION [INSTRUMENT CLUSTER] .) Is there any DTC retrieved?	Yes	Go to applicable DTC inspection. (See DTC TABLE [INSTRUMENT CLUSTER] .)
5		No	Go to the next step.
6	Disconnect the negative battery cable. Measure the resistance between the DLC-2 terminals F and E. Is the resistance below 60 ohms ?	Yes	Go to the next step.
6		No	Go to Step 7.
7	Disconnect the negative battery cable. Inspect the DLC-2 terminals F and E for short to power supply or ground. Is there any malfunction?	Yes	Inspect the wiring harness and CAN system-related module. Repair or replace the malfunctioning part.
7		No	Replace the instrument cluster.
8	Switch the ignition to off. Inspect the instrument cluster connector terminals for poor connection (such as damaged/pulled-out pins, and corrosion). Are the terminals normal?	Yes	Go to the next step.
8		No	Repair or replace the terminal.
9	Disconnect the negative battery cable. Measure the resistance between the instrument cluster connector terminals 2X and 2W. Is the resistance 114-126 ohms ?	Yes	Inspect the wiring harness and CAN system-related module. Repair or replace the malfunctioning part.
9		No	Replace the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION .)