NO. 9 WATER TEMPERATURE GAUGE INDICATION IS DEFECTIVE [INSTRUMENT CLUSTER]SM2446095
NO. 9 WATER TEMPERATURE GAUGE INDICATION IS DEFECTIVE [INSTRUMENT CLUSTER]

id0903d5808200

9

Water temperature gauge indication is defective
POSSIBLE CAUSE
• PCM malfunction
• Instrument cluster malfunction
• Connector or pin malfunction
• Short circuit in wiring harness between CAN-L, CAN-H and GND
• Open circuit in CAN wiring harness (CAN-L, CAN-H)
• CAN wiring harness (CAN-L, CAN-H) short each other

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.
No
Go to the next step.
2
• Inspect the DTC for the instrument cluster ON-BOARD DIAGNOSTIC SYSTEM.
• Has DTC U0401:68 been recorded in memory?
Yes
Go to the next step.
No
Go to Step 4.
3
• Inspect the water temperature gauge. (See INSTRUMENT CLUSTER INSPECTION.)
• Is the water temperature gauge normal?
Yes
Go to the next step.
No
Repair or replace malfunctioning part according to inspection result.
4
• Verify that the PCM PID ECT using the M-MDS.
• Does the ECT PID indicate engine coolant temperature properly?
Yes
Go to the next step.
No
Inspect for ECT sensor and related wiring harness.
(See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [L5].)
(See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [L3 Turbo].)
(See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [MZR-CD 2.2].)
5
• 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.
No
Go to Step 7.
6
• Disconnect the negative battery cable.
• Inspect the DLC-2 terminals F and E for short to power supply or GND.
• Is there any malfunction?
Yes
Inspect the wiring harness and CAN system-related module.
Repair or replace the malfunctioning part.
No
Replace the instrument cluster.
(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
7
• Turn the ignition switch to the LOCK position.
• 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.
No
Repair or replace the terminal.
8
• Disconnect the negative battery cable.
• Measure the resistance between the instrument cluster connector terminals 2R and 2T.
• Is the resistance 114—126 ohms?
Yes
Inspect the wiring harness and CAN system-related module.
Repair or replace the malfunctioning part.
No
Replace the instrument cluster.
(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)