NO. 8 TACHOMETER INDICATION IS DEFECTIVE [INSTRUMENT CLUSTER]

id0903d5808100

8	Tachometer indication is defective
POSSIBLE CAUSE	•  PCM malfunction •  Instrument cluster malfunction •  Poor connection of instrument cluster connector, terminal damage •  Poor connection of PCM connector, terminal damage •  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	•  Retrieve the DTC related to the PCM using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [L8, LF, L5].) (See ON-BOARD DIAGNOSTIC TEST [MZR-CD (RF Turbo)].) (See ON-BOARD DIAGNOSTIC TEST [MZR-CD 2.2].) •  Is there any DTC retrieved?	Yes	Go to the applicable troubleshooting procedure. (See DTC TABLE [L8, LF, L5]) (See DTC TABLE [MZR-CD (RF Turbo)]) (See DTC TABLE [MZR-CD 2.2].)
		No	Go to the next step.
3	•  Start the engine. •  Verify that the speedometer and water temperature gauge indications. •  Do the tachometer and water temperature gauge function properly?	Yes	Go to the next step.
		No	Go to Step 5.
4	•  Inspect the tachometer indication when the following commands are send to the instrument cluster using the M-MDS active command modes TACHOMTR. (See ACTIVE COMMAND MODES TABLE [INSTRUMENT CLUSTER].) Note •  The simulation activation values (%) are which 10,000 rpm is assumed to be 100 % (100 rpm = 1 %). ―  Activate 10 %: 1,000 rpm indicates ―  Activate 25 %: 2,500 rpm indicates ―  Activate 50 %: 9,000 rpm indicates •  Does the speedometer move according to active command modes?	Yes	Verify that the PCM is connected securely. If the PCM is poorly connected: Connect the connector securely. If a malfunction is in the PCM side connector: Replace the PCM. (See PCM REMOVAL/INSTALLATION [L8, LF, L5].) (See PCM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].) (See PCM REMOVAL/INSTALLATION [MZR-CD 2.2].) If a malfunction is in the vehicle side connector: Repair or replace the malfunctioning part.
		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].)
		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 54—66 ohms?	Yes	Go to the next step.
		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.
		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.
		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.
		No	Replace the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)