Accel Pedal Sensor CAN Message Incorrect

(P0600) ACCEL PEDAL SENSOR CAN MESSAGE INCORRECT





When Monitored and Set Condition
- When Monitored: When a valid Accelerator Pedal Position Sensor (APPS) or Throttle Position Sensor (TPS) CAN Message Received at least once and the DTCs, CAN Bus Circuit, Engine CAN Message Missing and Engine CAN Message Incorrect are not active.
- Set Condition: Accelerator Pedal Position Sensor (APPS) or Throttle Position Sensor (TPS) Message not valid or a PCM Engine Sensor DTC detected.

POSSIBLE CAUSES
- CAN BUS CIRCUIT DTC PRESENT
- ENGINE APP OR TPS DTCS PRESENT
- ENGINE COMMUNICATION DTCS PRESENT
- TRANSMISSION CONTROL MODULE
- POWERTRAIN CONTROL MODULE

Diagnostic Test
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. (P0720) CAN BUS CIRCUIT DTC PRESENT





Turn the ignition on.
With the DRB III*, read Transmission DTCs.

Note: If DTC (P0720) CAN BUS CIRCUIT is present, perform diagnostics on that symptom first.

Is DTC (P0720) CAN BUS CIRCUIT present?
Yes>>Refer to the Transmission - Electrical Diagnostics category and perform the appropriate symptom.
No>>Go To 3

3. CHECK FOR CURRENT DTC





Note: If the TCM detects and stores a DTC, the TCM also stores the engine/vehicle operating conditions under which the DTC was set. Some of these conditions are displayed on the DRB III* at the same time the DTC is displayed.

Note: Before erasing stored DTCs, record these conditions. Attempting to duplicate these conditions may assist when checking for an active DTC.

Turn the ignition on.
With the DRB III*, erase TCM DTCs.

Note: It maybe necessary to road test the vehicle for this DTC to set. With the DRB III*, read the TCM DTCs.

Did this DTC set again?
Yes>>Go To 4
No>>Go To 7

4. CHECK TO SEE IF ENGINE COMMUNICATION DTCS ARE PRESENT





With the ignition on.
With the DRB III*, read Engine DTCs.
Are any Engine Bus related DTCs present?
Yes>>Refer to the Engine - Electrical Diagnostics category and perform the appropriate symptom.
No>>Go To 5

5. CHECK TO SEE IF ENGINE DTCS ARE PRESENT





With the ignition on.
With the DRB III*, read Engine DTCs.
Are any Engine APPS or TPS DTCs present?
Yes>>Refer to the Engine - Electrical Diagnostics category and perform the appropriate symptom.
No>>Go To 6

6. TOM - ENGINE TPS MESSAGE





Turn the ignition off.
Replace the Transmission Control Module.
Perform NAG1 TRANSMISSION VERIFICATION TEST.
Turn the ignition on.
With the DRB III*, read Transmission DTCs.
Did DTC (P0600) ACCEL PEDAL SENSOR CAN MESSAGE INCORRECT set again?
Yes>>Replace and program the Powertrain Control Module.
Perform NAG1 TRANSMISSION VERIFICATION TEST.
No>>Test Complete.

7. INTERMITTENT WIRING AND CONNECTORS
The condition that caused this DTC to set is currently not present. Inspect the related wiring harness for a possible intermittent condition.
Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
Wiggle the wires while checking for shorts and open circuits.

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

Were any problems found?
Yes>>Repair as necessary. Perform NAG1 TRANSMISSION VERIFICATION TEST. Verification Tests
No>>Test Complete.