PLATE AS-SIDE 5501282 - Caterpillar

Table 1
J1939 Code and Description CDL Code and Description Comments
1656-2
Engine Automatic Start Enable Switch : Erratic, Intermittent, or Incorrect 336-2
Engine Control Switch : Erratic, Intermittent, or Incorrect The two inputs from the ECS are in the opposite state.
The code is logged.
Illustration 1 g03730400
ECM A4
Illustration 2 g06320027
ECM A5
Table 2
1. Inspect the Electrical Connectors and the Wiring
A. Turn the main disconnect switch to the OFF position.
B. Thoroughly inspect the connectors. Refer to Troubleshooting, "Electrical Connectors-Inspect" for additional information.
C. Perform a 45 N (10 lb) pull test on the connector wires.
D. Check the harness for abrasions and pinch points.
Connectors and Wiring
Result: The connectors and wiring appear to be OK.
Proceed to Test Step 2.
Result: There is a problem with the connectors and/or wiring.
Repair: Repair or replace