DTC C1851-19: Control Module Internal Control Module Malfunction
| DTC Description | DTC | Freeze Frame |
|---|---|---|
| C1851-19 Control Module Internal Control Module Malfunction |
- Problem verification (with idling):
- 1. Turn the ignition switch to ON (II).
- 2. Clear the DTC with the HDS.
- 3. Start the engine.
- 4. Check for DTCs with the HDS.
DTC Description DTC Freeze Frame C1851-19 Control Module Internal Control Module Malfunction
Is DTC C1851-19 indicated?
YES : The failure is duplicated. Update the real time AWD control unit if it does not have the latest software See REAL TIME AWD CONTROL UNIT REMOVAL AND INSTALLATION or REAL TIME AWD CONTROL UNIT UPDATE , or substitute a known-good real time AWD control unit See REAL TIME AWD CONTROL UNIT REMOVAL AND INSTALLATION or REAL TIME AWD CONTROL UNIT UPDATE , and recheck. If the symptom/indication goes away with the updated real time AWD control unit, troubleshooting is complete. If the symptom/indication goes away with a known-good real time AWD control unit, replace the original real time AWD control unit See REAL TIME AWD CONTROL UNIT REMOVAL AND INSTALLATION or REAL TIME AWD CONTROL UNIT UPDATE .
NO : Go to step 2.
- Problem verification (motor running):
- 1. Clear the DTC with the HDS.
- 2. With the engine running, DO THE AIR BLEEDING IN THE ADJUSTMENT MENU WITH THE HDS .
- 3. Check for DTCs with the HDS.
DTC Description DTC Freeze Frame C1851-19 Control Module Internal Control Module Malfunction
Is DTC C1851-19 indicated?
YES : Update the real time AWD control unit if it does not have the latest software See REAL TIME AWD CONTROL UNIT REMOVAL AND INSTALLATION or REAL TIME AWD CONTROL UNIT UPDATE , or substitute a known-good real time AWD control unit See REAL TIME AWD CONTROL UNIT REMOVAL AND INSTALLATION or REAL TIME AWD CONTROL UNIT UPDATE , and recheck. If the symptom/indication goes away with the updated real time AWD control unit, troubleshooting is complete. If the symptom/indication goes away with a known-good real time AWD control unit, replace the original real time AWD control unit See REAL TIME AWD CONTROL UNIT REMOVAL AND INSTALLATION or REAL TIME AWD CONTROL UNIT UPDATE .
NO : Intermittent failure, the system is OK at this time.