FAN-CONDENSER 5364176 - Caterpillar

Illustration 1 g00658078
Schematic of the "SPI Data Link"This diagnostic code is recorded if the ECM is unable to communicate with the keypad.System Response:This condition causes the keypad to operate erratically or the keypad may not function at all.Test Step 1. INSPECT THE HARNESS CONNECTIONS.
Turn the disconnect switch to the OFF position.
Inspect the harness connections that are related to the "SPI Data Link". Make sure that the connectors are clean and tight.
Check the mating of the harness connectors.
Check wires at the connector.
Check each wire for nicks or signs of abrasion in the insulation.
Check for moisture at the connector.
Check for dirty contacts or corroded contacts.
Check each pin and each socket. Expected Result:The machine harness connectors are tight and free of corrosion. Results:
OK - The machine harness connectors are tight and free of corrosion. Proceed to test step 2.
NOT OK - The machine harness connectors are NOT tight and free of corrosion. Repair: Repair