AWD Light Stays On
WARNING: This page is about a different car, the 2020 Jeep Renegade. However, it is still accessible from the selected car via links, so may be relevant.
| 1 | COMPONENT CONCERNED | CHECK DATA USING DIAGNOSIS EQUIPMENT | OK (NO FAULTS DETECTED) | FAULT DETECTED | OPERATION |
| Traction control module | Connect the diagnostic equipment and save the report with the vehicle information. | Go to Step 2 | - | - | |
| 2 | COMPONENT CONCERNED | CHECK REAR DIFFERENTIAL CLASSIFICATION | OK (NO FAULTS DETECTED) | FAULT DETECTED | OPERATION |
| Rear differential | Connect the diagnosis equipment and check the rear differential classification | Go to Step 3 | - | Position the vehicle on the lift and check that the value detected using the diagnostic equipment corresponds to the number printed on the label present on the rear differential. | |
| 3 | COMPONENT CONCERNED | CHECK ALL-WHEEL DRIVE CONNECTOR CONNECTIONS | OK (NO FAULTS DETECTED) | FAULT DETECTED | OPERATION |
| PTU harness all-wheel drive connector connections (in engine compartment) | Check for presence of bent pins on all-wheel drive connector connection and integrity of the wiring | Go to Step 4 | Presence of bent pins or not intact wiring | Replace the wiring and then connect the diagnostic equipment and check that the state passes from "Present" to "Stored". Run a road test. | |
| 4 | COMPONENT CONCERNED | CHECK ALL-WHEEL DRIVE CONNECTOR RESISTANCE VALUE | OK (NO FAULTS DETECTED) | FAULT DETECTED | OPERATION |
| PTU harness all-wheel drive connector (in engine compartment) | Check measured resistance values and compare with reference values | Go to Step 5 | Resistance values do not conform | Replace the all-wheel drive connector and run a road test | |
| 5 | COMPONENT CONCERNED | CHECK ALL-WHEEL DRIVE ACTUATOR RESISTANCE VALUE | OK (NO FAULTS DETECTED) | FAULT DETECTED | OPERATION |
| All-wheel drive actuator (PTU motor) | Check that there is no presence of water or dust on the all-wheel drive actuator connections | Go to Step 6 | Presence of water or dust or incorrect resistance values | Replace the all-wheel drive actuator. Run a road test. | |
| 6 | COMPONENT CONCERNED | CHECK ALL-WHEEL DRIVE CONTROL MODULE CONNECTION | OK (NO FAULTS DETECTED) | FAULT DETECTED | OPERATION |
| DTCM all-wheel drive control unit connections | Check correct positioning of the connector on the control module and then for loose connections | Go to Step 7 | Presence of loose connections | Restore the correct connections | |
| 7 | COMPONENT CONCERNED | POWERTRAIN CONTROL MODULE CONNECTION CHECK | OK (NO FAULTS DETECTED) | FAULT DETECTED | OPERATION |
| DTCM all-wheel drive control unit connections | Check for the presence of bent or burnt pins on the connector on control module side and on wiring side | Go to Step 8 | Presence of bent or burnt pins. DTCM wiring or connector not intact. | Replace the control module or electrical wiring if totally compromised. | |
| 8 | COMPONENT CONCERNED | CHECK ALL-WHEEL DRIVE ACTUATOR OPERATION | OK (NO FAULTS DETECTED) | FAULT DETECTED | OPERATION |
| All-wheel drive actuator (PTU motor) | Connect the diagnostic equipment, activate the "Roller bench" function and check for presence of error C2270 - 77: check the operation of the all-wheel drive actuator using the "Roller bench dynamometer mode" function on the diagnostic equipment | Go to Step 9 | Gear not functioning | The intermediate gear of the all-wheel drive actuator has a damaged tooth: replace the PTU. | |
| 9 | COMPONENT CONCERNED | CHECK CONNECTIONS ON REAR DIFFERENTIAL | OK (NO FAULTS DETECTED) | FAULT DETECTED | OPERATION |
| Connections on rear differential | Check for presence of water, dust, bent pins or loose connections on the wiring and on the rear differential (it is located under the front kick plate on driver side) | Go to Step 10 | Presence of bent pins or not intact wiring | Replace the rear differential and the electrical wiring. | |
| 10 | COMPONENT CONCERNED | CHECK OPERATION USING DIAGNOSIS EQUIPMENT | OK (NO FAULTS DETECTED) | FAULT DETECTED | OPERATION |
| Rear differential | Connect the diagnosis equipment and check for related errors C2220-54 and C2230-98 | Go to Step 11 | Presence of errors C2220-54 and C2230-98 | Proceed as follows: Delete error C2230-98 and run the "Auto test on demand" calibration procedure. If the AWD light turns on during the procedure but error C2220-54 appears, check the rear differential oil conditions. If it is dark and smelly, replace the rear differential and run the initialization procedure. | |
| 11 | COMPONENT CONCERNED | CHECK OPERATION USING DIAGNOSIS EQUIPMENT | OK (NO FAULTS DETECTED) | FAULT DETECTED | OPERATION |
| Rear differential | Connect the diagnosis equipment and check for the presence of error C2230-98 | Go to Step 12 | Presence of error C2230-98 | Extract the right driveshaft in axial direction: if the displacement is equal to or greater than 1 cm replace the rear differential and run the initialization procedure. | |
| 12 | COMPONENT CONCERNED | CHECK OPERATION USING DIAGNOSIS EQUIPMENT | OK (NO FAULTS DETECTED) | FAULT DETECTED | OPERATION |
| Rear differential | Connect the diagnosis equipment and check for the presence of error C2230-98 | Go to Step 13 | Presence of dark, smelly oil. | Run a road test at a speed of 40 km/h (25 mph) until the AWD state signal switches to 2WD. Press the lock button or select SNOW-SAND or MUD mode (ROCK mode, if present). If a noise can be heard during the switch, replace the rear differential and run the initialization procedure. | |
| 13 | COMPONENT CONCERNED | CHECK CAN LINE WIRING BETWEEN BODY COMPUTER AND TRACTION CONTROL MODULE | OK (NO FAULTS DETECTED) | FAULT DETECTED | OPERATION |
| Traction control module wiring | Check CAN line wiring for continuity between the traction control module and the body computer | Go to Step 14 | Break in the wiring continuity | Restore the correct continuity of the wiring | |
| 14 | COMPONENT CONCERNED | ALL-WHEEL DRIVE CONTROL MODULE CONNECTION CHECK | OK (NO FAULTS DETECTED) | FAULT DETECTED | OPERATION |
| Traction control module wiring | Check insulation of the CAN bus wiring, the correct tightening of the control module connector on vehicle wiring side. | Go to Step 15 | Wiring insulation not correct | Restore the correct wiring insulation | |
| 15 | COMPONENT CONCERNED | ALL-WHEEL DRIVE CONTROL MODULE CONNECTION CHECK | OK (NO FAULTS DETECTED) | FAULT DETECTED | OPERATION |
| All-wheel drive control unit connections | Check for presence of bent or corroded (burnt) pins on the traction control module | Presence of bent or corroded (burnt) pins on the traction control module | Presence of bent or corroded (burnt) pins on the traction control module | Replace the Drivetrain Control Module |