NO. 9 TACHOMETER INDICATION IS DEFECTIVE [INSTRUMENT CLUSTER]


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9

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 ground
•  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. (The system is normal.)
No
Go to the next step.
2
•  Is the DTC detected?
Yes
Go to applicable DTC troubleshooting procedure.
No
Go to the next step.
3
•  Verify that the tachometer 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.
4
•  Monitor the PCM PID RPM using the M-MDS.
•  Start the engine and compare the M-MDS monitored value with the tachometer indication.
•  Does the M-MDS monitored value correspond to the tachometer indication?
Yes
Go to the next step.
No
Inspect for CKP sensor, related wiring harness, installation, and pulse wheel condition.
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 ground.
•  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.
7
•  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.
No
Repair or replace the terminal.
8
•  Disconnect the negative battery cable.
•  Measure the resistance between the instrument cluster connector terminals 2B and 2D.
•  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.