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 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	•  Reactive the DTC of PCM using M-MDS. (See ON-BOARD DIAGNOSTIC TEST [MZR 1.3, MZR 1.5].) (See ON-BOARD DIAGNOSTIC TEST [MZ-CD 1.6].) •  Is the DTC detected?	Yes	Go to applicable DTC troubleshooting procedure. (See DTC TABLE [MZR 1.3, MZR 1.5].) (See DTC TABLE [MZ-CD 1.6].)
		No	Go to the next step.
3	•  Start the engine. •  Verify that the tachometer indication and high engine coolant temperature warning light illumination. •  Do the tachometer and high engine coolant temperature warning light work properly?	Yes	Go to the next step.
		No	Go to Step 5.
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	Verify that the PCM connector is connected securely. If the PCM connector is poor connection: Connect the PCM connector securely. If malfunction is in the PCM side connector: Replace the PCM. (See PCM REMOVAL/INSTALLATION [MZR 1.3, MZR 1.5].) (See PCM REMOVAL/INSTALLATION [MZ-CD 1.6].) If malfunction is in vehicle side connector: Repair or replace malfunctioning part.
		No	Replace the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
5	•  Reactive the DTC of instrument cluster using M-MDS. (See DTC INSPECTION [INSTRUMENT CLUSTER].) •  Is the DTC detected?	Yes	Go to the applicable DTC troubleshooting procedure. (See DTC TABLE [INSTRUMENT CLUSTER].)
		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.
		No	Go to Step 8.
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.
		No	Replace the instrument cluster.
8	•  Turn the ignition switch 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.
9	•  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. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)