Daytona V6-181 2972cc 3.0L SOHC VIN 3 FI (1992)
Tachometer: Testing and Inspection
1.
Remove cluster.
Conventional Cluster Connectors
2.
Check for battery voltage at cavity 8 of the instrument cluster red connector.
3.
Turn the ignition switch ON and check for voltage at cavity 9 of the instrument cluster red connector.
4.
Check cavity 14 of the black connector for continuity to ground.
5.
Check for tachometer signal from the engine controller by connecting an AC digital voltmeter between cavity 6 of the instrument cluster black
connector and ground. A pulsating reading of at least 1.0 volts should be present while the engine is running.
^
If voltage is within specifications, go to step 7.
6.
If there is less than 1.0 volts at cavity 6, check for continuity between cavity 6 of the instrument cluster and pin 43 of the engine controller
connector.
^
If continuity is good and no pins or terminals are damaged, replace the engine controller.
7.
If all tests performed good, replace the tachometer drive module.
8.
If the tachometer continues to be inoperative, replace the tachometer assembly.
Multiple Gauge Malfunction
If the Voltmeter, Speedometer, Tachometer, and other gauges appear to be malfunctioning, proceed as follows:
1.
Remove the cluster.
2.
Check for ignition voltage at cavity 9 of the red cluster connector and ground.
^
If voltage is not present, repair open circuit.
3.
Check for ground continuity between cavity 14 of the red cluster connector and ground.
^
If a good ground is not present, repair open circuit.
4.
If circuits are OK and pins or connectors are not distorted, replace the printed circuit board.
