NO. 8 TACHOMETER INDICATION IS DEFECTIVE [INSTRUMENT CLUSTER]SM2446094
NO. 8 TACHOMETER INDICATION IS DEFECTIVE [INSTRUMENT CLUSTER]

id0903d5808100

8

Tachometer 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 tachometer needle move smoothly?
― Does the tachometer needle indicate correct engine speed?
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
Inspect the DTC for the PCM.
(See ON-BOARD DIAGNOSTIC WIRING DIAGRAM [L5].)
(See ON-BOARD DIAGNOSTIC WIRING DIAGRAM [L3 Turbo].)
(See ON-BOARD DIAGNOSTIC WIRING DIAGRAM [MZR-CD 2.2].)
No
Go to the next step.
3
• Verify that the speedometer needle moves using M-MDS instrument cluster simulation function TACHOMTR.
• Does the tachometer needle move according to simulation function?
Yes
Go to the next step.
No
Replace the instrument cluster.
(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
4
• Verify that the PCM PID RPM using the M-MDS.
• Does the RPM PID indicate engine speed properly?
Yes
Go to the next step.
No
Inspect for CKP sensor, related wiring harness, installation, and pulse wheel condition.
(See CRANKSHAFT POSITION (CKP) SENSOR INSPECTION [L5].)
(See CRANKSHAFT POSITION (CKP) SENSOR INSPECTION [L3 Turbo].)
(See CRANKSHAFT POSITION (CKP) SENSOR INSPECTION [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.)