Drivetrain Control Module (DTCM)

C2101-BATTERY VOLTAGE HIGH

For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
Continuously.

- Set Condition:
The Drive Train Control Module (DTCM) detects that system voltage is above 16.0 volts for more than 30 seconds.





1. CHARGING SYSTEM DTCS PRESENT
1. Ignition on, engine not running.
2. With the scan tool, read DTCs in the Powertrain Control Module (PCM).

Are there any Charging System or related voltage DTCs present?

Yes

- Testing and Inspection Perform any Charging System DTC diagnostic procedures before continuing with this test.

No

- Go To 2

2. BODY CONTROL MODULE (BCM) DTCS PRESENT
1. Ignition on, engine not running.
2. With the scan tool, read DTCs in the BCM.

Are there any BCM DTCs present?

Yes

- Perform the appropriate diagnostic procedure. Testing and Inspection

No

- Go To 3

3. VERIFY THE DTC IS ACTIVE

NOTE: Leave the ignition on for 30 seconds.

1. With the scan tool, read DTCs.

Is the DTC active at this time?

Yes

- Go To 4

No

- Go To 5

4. DRIVE TRAIN CONTROL MODULE (DTCM)

NOTE: Before continuing, check the DTCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.

1. Using the schematics as a guide, inspect the wire harness and connectors.
2. Pay particular attention to all Power and Ground circuits.

Were any problems found?

Repair

- Replace the Drive Train Control Module (DTCM). Drivetrain Control Module - Removal.
- Perform the DTCM VERIFICATION TEST. DTCM Verification Test.

5. INTERMITTENT 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 test the wiring harness and connectors while checking for shorted and open circuits.
4. Using the scan tool, monitor the data related to this circuit while performing the wiggle test. Look for the data to change or for the DTC to reset.

Were there any problems found?

Yes

- Repair as necessary.
- Perform the DTCM VERIFICATION TEST. DTCM Verification Test.

No

- Test Complete.