P198A

P198A-AWD SYSTEM PERFORMANCE

For a complete wiring diagram refer to the wiring information .

Theory of Operation

The TCM receives the On/Off-road signals from All Wheel Drive control module (AWD) and the Totally Integrated Power Module (TIPM) over the CAN BUS. If the signals from AWD and TIPM do not match, this DTC will set.

- When Monitored:
Ignition on, no CAN DTCs from either the AWD control module or the TIPM.

- Set Condition:
Condition One: Received On/Off-road signal pattern but not an existing pattern for the period of 20 seconds.

Condition Two: Received On/Off-road signal pattern but not a proper pattern for the period of 60 seconds.





Always perform the CVT Pre-Diagnostic Troubleshooting procedure before proceeding. Testing and Inspection

1. CHECK IF THE DTC IS ACTIVE
1. With the scan tool, read Transmission DTCs.

Is the status Active for this DTC?

Yes

- Go to 2

No

- Go to 6

2. CHECK FOR AWD MODULE DTCS
1. With the scan tool, read DTCs.

Does the AWD module have any DTCs present?

Yes

- Testing and Inspection Diagnose and repair the DTC(s).
- Perform CVT TRANSMISSION VERIFICATION TEST CVT Transmission Verification Test.

No

- Go to 3

3. CHECK FOR TIPM DTCS
1. With the scan tool, read DTCs.

Does the TIPM have any DTCs present?

Yes

- Diagnose and repair the DTC(s).
- Perform CVT TRANSMISSION VERIFICATION TEST. CVT Transmission Verification Test

No

- Go to 4

4. REPLACE THE AWD MODULE
1. Using the schematics as a guide, check the All Wheel Drive Module (AWD) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. Check for any Service Bulletins for possible causes that may apply. If no problems are found, replace the AWD module.
2. Perform CVT TRANSMISSION VERIFICATION TEST. CVT Transmission Verification Test

Did the DTC P198A reset?

Yes

- Go to 5

No

- Test complete.

5. REPLACE THE TIPM
1. Using the schematics as a guide, check the Totally Integrated Control Module (TIPM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. Check for any Service Bulletins for possible causes that may apply. If no problems are found, replace the TIPM.
2. Perform CVT TRANSMISSION VERIFICATION TEST. CVT Transmission Verification Test

Did the DTC P198A reset?

Yes

- Using the schematics as a guide, check the Transmission Control Module (TCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. Check for any Service Bulletins for possible causes that may apply. If no problems are found, replace the TCM.
- Perform CVT TRANSMISSION VERIFICATION TEST. CVT Transmission Verification Test

No

- Test complete.

6. CHECK THE WIRING AND CONNECTORS
1. The conditions necessary to set this DTC are not present at this time.
2. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
3. Wiggle the wires while checking for shorted and open circuits.
4. Check for any Service Bulletins that may apply.

Were there any problems found?

Yes

- Repair as necessary.
- Perform CVT TRANSMISSION VERIFICATION TEST. CVT Transmission Verification Test

No

- Test Complete.