Engine CAN Message Incorrect

(P0600) ENGINE CAN MESSAGE INCORRECT





When Monitored and Set Condition
- When Monitored: CAN-ID received at least once and CAN Bus Circuit is not active.
- Set Condition: DTC Detected if the number of bytes is incorrect for CAN ID.

POSSIBLE CAUSES
- ENGINE DTCS PRESENT
- POWERTRAIN CONTROL MODULE
- TRANSMISSION CONTROL MODULE

1. PRE-DIAGNOSTIC CHECK OUT





Note: Low fluid level can be the cause of many transmission problems. If the fluid level is low, locate and repair the leak then check and adjust the fluid level in accordance with the Service Information.

Note: Always perform diagnostics with a fully charged battery to avoid false symptoms.
With the DRB III*, read the engine DTCs. Check and repair all engine DTCs prior to performing transmission symptom diagnostics.
With the DRB III*, read and record all Transmission DTCs.

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. Repair as necessary.
Most DTCs set on start up but some must be set by driving the vehicle such that all diagnostic monitors have run.

Note: Verify flash level of transmission controller. Some problems are corrected by software upgrades to the transmission controller.

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

Perform this procedure prior to Symptom diagnosis.
Continue
Go To 2

2. CHECK TO SEE IF ENGINE DTCS ARE PRESENT





Turn the ignition on.
With the DRB III*, read Engine DTCs.
Are any performance or bus related Engine DTCs present?
Yes>>Refer to the Engine - Electrical Diagnostics category and perform the appropriate symptom.
No>>Go To 3

3. PCM - ENGINE CAN MESSAGE INCORRECT





Turn the ignition off.
Replace and program the Powertrain Control Module.
Turn the ignition on.
With the DRB III*, erase Transmission DTCs.
Start the engine.
With the brakes firmly applied, shift the gear selector into drive.
With the DRB III*, read Transmission DTCs.
Did DTC (P0600) ENGINE CAN MESSAGE INCORRECT set again?
Yes>>Replace the Transmission Control Module.
Perform NAG1 TRANSMISSION VERIFICATION TEST. Verification Tests
No>>Test Complete.