0318881 HOOK, Rear JOHNSON
10E74G, 10E75C, 10E76G, 10E77A, 10E78M, 10EL79B, 15E74G, 15E75C, 15E76A, 15E77M, 15E78B, 15E79E, J10ECSE, J15ECSD
HOOK
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BRP JOHNSON entire parts catalog list:
- MOTOR COVER GROUP » 0318881
10E76G, 10E76H, 10E76R, 10EL76G, 10EL76H, 10EL76R, 10R76G, 10R76H, 10R76R, 10RL76G, 10RL76H, 10RL76R 1976
10E77A, 10EL77A, 10R77A, 10RL77A 1977
10E78M, 10EL78M, 10R78M, 10RL78M, 10SEL78M 1978
10EL79B, 10R79B, 10RL79B, 10SEL79B 1979
15E74G, 15E74S, 15EL74G, 15EL74S, 15R74G, 15R74S, 15RL74G, 15RL74S 1974
15E75C, 15EL75C, 15R75C, 15RL75C 1975
15E76A, 15E76R, 15EL76A, 15EL76R, 15R76A, 15R76R, 15RL76A, 15RL76R 1976
15E77M, 15EL77M, 15R77M, 15RL77M 1977
15E78B, 15EL78B, 15R78B, 15RL78B 1978
15E79E, 15EL79E, 15R79E, 15RL79E 1979
J10ECSE, J10ELCSE, J10RCSE, J10RLCSE, J10SELCSE 1980
J15ECSD, J15ELCSD, J15RCSD, J15RLCSD 1980
Information:
Illustration 1 g01727874
Schematic for the ignition keyswitch and battery supply circuit
Illustration 2 g01727876
Pin locations for the ignition keyswitch and battery supply circuit on the P1 connector (1) Battery ground (GND) (2) Battery ground (GND) (3) Battery ground (GND) (7) Battery+ (8) Battery+ (9) Battery ground (GND) (10) Battery ground (GND) (15) Battery+ (16) Battery+ (40) Ignition key switchTest Step 1. Check for Active Diagnostic Codes or Logged Diagnostic Codes
Connect the electronic service tool to the diagnostic connector.
Turn the keyswitch to the ON position.
Monitor the active diagnostic code screen on the electronic service tool. Check and record any active diagnostic codes or logged diagnostic codes.Note: Wait at least 30 seconds in order for the diagnostic codes to become active.Expected Result:One of the following diagnostic codes is active or logged:
168-0 Electrical System Voltage high
168-1 Electrical System Voltage low
168-2 Electrical System Voltage erratic, intermittent, or incorrect
168-3 Electrical System Voltage high
168-4 Electrical System Voltage low
1834-2 Ignition Keyswitch loss of signalNote: Diagnostic code 1834-2 can be generated by rapidly cycling the keyswitch. If diagnostic code 1834-2 is logged but not active, keyswitch cycling may be the cause.Results:
OK - Diagnostic codes 168-0, 168-1, 168-3 or 168-4 are active or logged.Repair: Refer to Troubleshooting, "Battery".STOP
OK - Diagnostic code 168-2 or diagnostic code 1834-02 is active or logged. Proceed to Test Step 2.
Not OK - No diagnostic code is active.Repair: The fault is no longer present. If the problem is intermittent, refer to Troubleshooting, "Electrical Connectors - Inspect".STOPTest Step 2. Bypass the Machine Wiring
Batteries give off flammable fumes which can explode.To avoid injury or death, do not strike a match, cause a spark, or smoke in the vicinity of a battery.
Do not connect the bypass harness to the battery until all of the in-line fuses have been removed from the Battery+ line. If the fuses are not removed before connection to the battery, a spark may result.
Note: This bypass harness is only for test applications. This bypass harness must be removed before the machine is returned to service. The bypass harness can be used to identify interruptions in battery power to the ECM or to the keyswitch circuit.
Illustration 3 g01727878
Schematic for the bypass application harness
Turn the keyswitch to the OFF position.
Disconnect P1 from the ECM connector.
Connect a bypass harness to the ECM.
Remove the fuse from the Battery+ wire of the bypass harness and connect the Battery+ and the Battery- wires directly to the battery terminals.
Install the in-line fuse in the Battery+ wire of the bypass harness.Note: This bypass directly connects the circuit for the keyswitch to the ECM. The ECM will remain powered until the connection to the unswitched battery+ line is disconnected. Remove the fuses from the in-line fuse holder to power down the ECM. Do not connect the bypass to the battery terminals or do not remove the bypass from the battery terminals without first removing the in-line fuse.
Connect the electronic service tool to the diagnostic connector and verify that communication can be established.Note: Remove the bypass harness and restore all wiring to the original condition after testing.Expected Result:Installing the bypass eliminates the fault.Note: The status of the "Ignition Keyswitch" will always indicate ON while the bypass harness is installed.Results:
OK - The symptoms disappear when the bypass harness is installed. Also, the symptoms return when the bypass harness is removed. The fault is in the machine wiring that supplies power to the ECM. Refer to the troubleshooting guide for the machine in order to investigate the fault.
STOP
Not OK - Repair: Perform the following repair:
Make sure that the latest flash file for the application is installed in the ECM. Refer to Troubleshooting, "Flash Programming".
Contact the technical communicator at the Caterpillar dealer.Note: This consultation can greatly reduce the repair time.
If the technical communicator recommends the use of a test ECM, install a test ECM. Refer to Troubleshooting, "Replacing the ECM".
Use the electronic service tool to recheck the system for active diagnostic codes.
If the fault is resolved with the test ECM, reconnect the suspect ECM.
If the fault returns with the suspect ECM, replace the ECM.
Use the electronic service tool in order to clear all logged diagnostic codes and then verify that the repair eliminates the fault.STOP
Parts hook JOHNSON:
0318880
0318880 HOOK, Front
10E74G, 10E75C, 10E76G, 10E77A, 10E78M, 10EL79B, 15E74G, 15E75C, 15E76A, 15E77M, 15E78B, 15E79E, J10ECSE, J15ECSD