Transfer Case Control Module (TCCM) DTC Chart
NOTE:
This module utilizes a 5-character DTC followed by a 2-character failure type code. The failure type code provides information about specific fault conditions such as opens or shorts to ground. Continuous Memory Diagnostic Trouble Codes (CMDTCs) have an additional 2-character DTC status code suffix to assist in determining DTC history.
| DTC | Description | Action |
|---|---|---|
| C1979:11 | IWE Solenoid Circuit Failure: Circuit Short To Ground | GO to Pinpoint Test C . |
| C1979:12 | IWE Solenoid Circuit Failure: Circuit Short To Battery | GO to Pinpoint Test C . |
| C1979:13 | IWE Solenoid Circuit Failure: Circuit Open | GO to Pinpoint Test C . |
| P0562:00 | Battery Voltage Low: No Sub Type Information | GO to Pinpoint Test B . |
| P0563:00 | Battery Voltage High: No Sub Type Information | GO to Pinpoint Test B . |
| P1812:00 | 4-Wheel Drive Mode Select Circuit Failure: No Sub Type Information | GO to Pinpoint Test D . |
| P1815:00 | 4-Wheel Drive Mode Select Short Circuit to Ground: No Sub Type Information | GO to Pinpoint Test D . |
| P1825:00 | 4-Wheel Drive Clutch Relay Open Circuit: No Sub Type Information | GO to Pinpoint Test E . |
| P1826:00 | 4-Wheel Drive Low Clutch Relay Circuit To Battery: No Sub Type Information | GO to Pinpoint Test E . |
| P1827:00 | 4-Wheel Drive Low Clutch Relay Circuit To Ground: No Sub Type Information | GO to Pinpoint Test E . |
| P1886:00 | 4X4 Initialization Failure: No Sub Type Information | CLEAR the DTC. REPEAT the self-test. If the DTC still reports, CONFIRM the Transfer Case Control Module (TCCM) part number is correct for the vehicle. |
| U0100:00 | Lost Communication with ECM/PCM "A": No Sub Type Information | REFER to MODULE COMMUNICATIONS NETWORK to diagnose the lost communication with the PCM. |
| U0121:00 | Lost Communication with Anti-Lock Brake System (ABS) Control Module: No Sub Type Information | REFER to MODULE COMMUNICATIONS NETWORK to diagnose the lost communication with the ABS module. |
| U0418:00 | Invalid Data Received From Brake System Control Module: No Sub Type Information | REFER to ANTI-LOCK BRAKE SYSTEM (ABS) AND STABILITY CONTROL to diagnose the wheel speed sensor concern. |
| U3000:04 | Control Module: System Internal Failure | CLEAR the DTC. REPEAT the self-test. If DTC U3000:04 is retrieved, INSTALL a new TCCM . REFER to 4X4 Control Module in this article. REPEAT the self-test. |
| U3000:41 | Control Module: General Checksum Failure | CLEAR the DTC. REPEAT the self-test. If DTC U3000:41 is retrieved, INSTALL a new TCCM . REFER to 4X4 Control Module in this article. REPEAT the self-test. |
| U3000:49 | Control Module: Internal Electronic Failure | CLEAR the DTC. REPEAT the self-test. If DTC U3000:49 is retrieved, INSTALL a new TCCM . REFER to 4X4 Control Module in this article. REPEAT the self-test. |
| U300D:11 | Ignition Input On/Start: Short Circuit To Ground | GO to Pinpoint Test A . |