5006001 JOHNSON Service Manual-FRENCH

Table 1
Setting For Transmission Style Parameter Necessary Switches
Service Brake (Switch 1) Service Brake (Switch 2) Clutch Neutral
Manual X X
Automatic Option 1 X
Automatic Option 2 X X
Automatic Option 3 X X X
Automatic Option 4 X X
Eaton Top 2 X X A service brake pedal position (switch 1) is required for all configurations. The service brake pedal position (switch 1) connects to the Engine Control Module (ECM) through terminal P1-45 at the ECM connector. The service brake pedal position (switch 2) connects to the ECM through terminal P1-64 at the ECM connector. The clutch pedal position switch connects to the ECM through terminal P1-22 at the ECM connector. The neutral switch connects to the ECM through terminal P1-62 at the ECM connector.
Illustration 1 g00643881
Schematic for cruise control switch, service brake pedal position (switch 1) and clutch pedal position switch
Test Step 1. Check the Status for the Service Brake Pedal Position (Switch 1)
Connect Caterpillar Electronic Technician (ET) to the data link connector.
Turn the keyswitch to the ON position.
Access the status for the "Service Brake Pedal Position (Switch 1)" on Cat ET.
While the status for the "Service Brake Pedal Position (Switch 1)" is monitored, depress the brake and release the brake. The correct status for the "Service Brake Pedal Position (Switch 1)" is "Off" when the brake is released. The correct status for the "Service Brake Pedal Position (Switch 1)" is "On" when the brake is depressed.
Turn the keyswitch to the OFF position. Expected Result:Cat ET reports the correct status for the service brake pedal position (switch 1).Results:
OK - Cat ET reports the correct status for the service brake pedal position (switch 1).Repair: The service brake pedal position (switch 1) appears to be working correctly. There may have been an intermittent electrical problem in the harness or in a connector. If an intermittent problem is suspected, refer to Troubleshooting, "Electrical Connectors - Inspect" for information that is related to troubleshooting intermittent electrical problems.STOP
Not OK - Cat ET is not reporting the correct status for the service brake pedal position (switch 1). The circuit for the service brake pedal position (switch 1) is not operating correctly. Proceed to Test Step 2.Test Step 2. Determine the Configuration of the Switch
Determine if the status of the service brake pedal position (switch 1) is wired directly to the ECM or if the status for the switch is reported over the J1939 data link.
Verify that the "Service Brake Pedal Position (Switch 1)" parameter is programmed to reflect the current wiring for the circuit. Expected Result:The service brake pedal position (switch 1) is wired directly to the ECM at terminal location P1-45.Results:
OK - The service brake pedal position (switch 1) is wired directly to the ECM.Repair: Verify that the parameter for the service brake pedal position (switch 1) is programmed to "J1/P1:45".Proceed to Test Step 3.
Not OK - The service brake pedal position (switch 1) is not wired to the ECM.Repair: The status of the service brake pedal position (switch 1) is reported over the J1939 data link. Verify that the parameter for the service brake pedal position (switch 1) is programmed to "J1939 - Body Controller", "J1939 - Cab Controller", or "J1939 - Instrument Cluster".Refer to Troubleshooting, "Powertrain Data Link Circuit - Test".STOPTest Step 3. Inspect the Electrical Connectors and the Wiring
Illustration 2 g01186024
Location of the J1/P1 ECM connectors (typical left side engine view)
Thoroughly inspect the J1/P1 ECM connector, the connectors, and the firewall bulkhead connectors. Refer to Troubleshooting, "Electrical Connectors - Inspect" for details.
Illustration 3 g01257149
Terminal locations at the P1 ECM connector for the service brake pedal position (switch 1)
(P1-5) AP sensor/switch sensor return
(P1-45) Service brake pedal position (switch 1)
Perform a 45 N