P0602

(P0602) PCM PROGRAMMED INCORRECT TRANS/NO COMM FROM TCM






When Monitored and Set Condition
^ When Monitored: With the ignition on.
^ Set Condition: This DTC is set when a CAN ID was not received in the required time from the Transmission Control Module (TCM).

POSSIBLE CAUSES
OPEN CAN C BUS (+)/(-) CIRCUIT
CAN C BUS (+)/(-) CIRCUIT SHORTED TO GROUND
CAN C BUS (+)/(-) CIRCUIT SHORTED TO VOLTAGE
TRANSMISSION CONTROL MODULE
SENTRY KEY REMOTE ENTRY MODULE
POWERTRAIN CONTROL MODULE

Diagnostic Test
1. CHECK FOR CURRENT DTC





Turn the ignition on.
With the DRB III, read the PCM DTCs.
Is this DTC preset?
Yes>> For complete diagnosis of this DTC, (P0600) No Transmission Bus Message
No>> Go To 2

2. INTERMITTENT WIRING AND CONNECTORS
The conditions necessary to set this DTC are not present at this time.

Note: Check connectors-Clean/repair as necessary. Poor pin to terminal connections can set DTCs. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors specific to this DTC. Wiggle the wires while checking for shorts and open circuits.

Note: Check for any Technical Service Bulletins that may apply.

Were there any problems found?
Yes>> Repair as necessary.
Perform Powertrain Verification Test - Ver 2
No>> The condition that caused this DTC to set is currently
not present. Inspect the related wiring harness for a possible intermittent condition.