5036947 JOHNSON ROD, CLUTCH (15" models)

Illustration 1 g01297984
Typical example of the switch circuits
Illustration 2 g01297986
P1 terminals for programming the inputsTest Step 1. Determine the Vehicle's ConfigurationDetermine the configuration of the wiring for the switch.Expected Result:The switch is wired directly to the ECM.Results:
Hard wired - Proceed to Test Step 2.
J1939 Data Link - Repair: If there are other problems with the J1939 data link, refer to Troubleshooting, "Link - Test".If there are no other problems with the J1939 data link, the problem is with one of the following components:
Wiring between the switch and the vehicle control module
Switch
Fuse or circuit breakerBe sure to carefully check for problems with electrical connectors and wiring.Repair the problem, when possible. Replace parts, if necessary. Send the vehicle to the OEM dealer for repair, if necessary. Verify that the problem is resolved.STOPTest Step 2. Perform the Wiggle TestCarefully following this procedure is a good way to identify the root cause of intermittent problems.
Interview the operator. Determine if there are other electrical problems. If there are other electrical problems, there is a problem with the battery or with the wiring between the battery and the fuse or the circuit breaker.Check the wiring between the battery and the fuse or the circuit breaker. Continue with this procedure if there is only one indication of an electrical problem.
Verify that the engine is OFF and that the keyswitch is ON.
Configure Cat ET for the wiggle test. Select the status group that includes the appropriate parameter. Start the wiggle test.
Slowly wiggle the wiring harness and the connectors between the P1 connector and the switch. Pay particular attention to the wiring near each connector. Be sure to wiggle all of the wiring between the P1 connector and the switch.As you wiggle the wiring, observe the harness and the connectors. Look for these problems:
Loose connectors or damaged connectors
Damage that is caused by excessive heat
Damage that is caused by chafing
Improper routing of wiring harnesses
Damaged insulation
Slowly wiggle the wiring between the switch and the fuse or the circuit breaker, if necessary. Pay particular attention to the wiring near each connector.Expected Result:The wiring failed the wiggle test.Results:
The wiring failed the wiggle test. - Repair: Repair the wiring, when possible. Replace parts, if necessary. Send the vehicle to the OEM dealer for repair, if necessary. Verify that the problem is resolved.STOP
The wiring passed the wiggle test. - Repair: There may be a problem with the switch. Perform the following procedure:
Verify that the connectors for the switch are securely fastened. Verify that the wiring to the connector is in good condition. Repair any problems, when possible. Continue with this procedure, if necessary.
Disconnect the connector for the switch. Carefully inspect the terminals in each connector for proper installation. Repair any problems, when possible. Continue with this procedure, if necessary.
Measure the resistance across the switch's terminals when the switch is activated and when the switch is not activated.The resistance must be less than five Ohms when the switch is closed. The resistance must be an open circuit when the switch is open.Repair any problems, when possible. Replace parts, if necessary. Send the vehicle to the OEM dealer for repair, if necessary. Verify that the problem is resolved.STOP