Instrument Cluster Instrument Cluster Pinpoint Test 6: Tachometer Is Inoperative

INSTRUMENT CLUSTER PINPOINT TEST 6 - TACHOMETER INOPERATIVE

PINPOINT TEST 6		TACHOMETER IS INOPERATIVE
STEP	INSPECTION		ACTION
1	CHECK THE GROUND TO THE TACHOMETER Key OFF. Disconnect instrument cluster connector 0922-102. Check the resistance between the instrument cluster 0922-102 pin 1 circuit B, harness side and ground and instrument cluster 0922-101 pin 3 circuit B/W, harness side and ground. Is the resistance less than 5 ohms?	Yes	Go to step 2.
		No	Repair the circuit in question. Test the system for normal operation.
2	CHECK CIRCUIT T/Y FOR AN OPEN Disconnect the PCM connector 0140-175. Measure the resistance between the instrument cluster 0922-102 pin 6, circuit T/Y, harness side and the PCM 0140-175 pin 48, circuit T/Y, harness side. Is the resistance less than 5 ohms?	Yes	Reconnect the PCM. Go to step 3.
		No	Repair T/Y wire. Test the system for normal operation.
3	CHECK CLEAN TACH OUT (CTO) SIGNAL TO TACHOMETER Start engine. Measure the voltage between the instrument cluster connector 0922-102 pin 6, circuit T/Y harness side and ground. Is the voltage between 5 and 8 volts?	Yes	Go to step 4.
		No	Go to step 5.
4	CHECK THE INSTRUMENT CLUSTER PRINTED CIRCUIT Disconnect all instrument cluster connectors. Check for: corrosion pushed-out pins Connect all instrument cluster connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present?	Yes	Replace the instrument cluster. See INSTRUMENT CLUSTER REMOVAL/INSTALLATION . Test the system for normal operation.
		No	The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. Clear the DTCs. REPEAT the self-test.
5	CHECK FOR CORRECT PCM OPERATION Check PCM connector for: corrosion pushed-out pins Connect PCM connector and make sure it is seated correctly. Operate the system and verify the concern is still present. Is the concern still present?	Yes	Install a new PCM. See POWERTRAIN CONTROL MODULE (PCM) REMOVAL/INSTALLATION . Test the system for normal operation.
		No	The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. Clear the DTCs and repeat the self-test.