75-2

SH-AWD DTC Troubleshooting: 75-2

DTC 75-2: Acceleration Device Malfunction (Stuck ON)

NOTE: Before you troubleshoot, review the general troubleshooting information. Initial Inspection and Diagnostic Overview

1. Turn the ignition switch to ON (II).

2. Make sure the HDS communicates with the vehicle and the SH-AWD control unit. If it doesn't, troubleshoot the DLC circuit. Testing and Inspection

3. Check for DTC 27-1 and DTC 27-2 with the HDS.

Are DTC 27-1 and DTC 27-2 indicated at the same time?
YES - Go to the DTC 27-1 and/or 27-2 troubleshooting first, then recheck.

NO - Go to step 4.


4. Check for DTCs in the VSA system with the HDS.

Are any VSA system DTCs indicated?
YES - Go to the indicated DTC's troubleshooting.

NO - Go to step 5.


5. Clear the DTC with the HDS.

6. Start the engine.

7. Do the acceleration device test. Component Tests and General Diagnostics

8. Check for DTCs with the HDS.

Is DTC 75-2 indicated?
YES - Go to step 9.

NO - Intermittent failure, the system is OK at this time.


9. Check the ACCELERATION RATIO with the HDS.

Is the acceleration ratio between 1.02 and 1.06?
YES - Go to step 10.

NO - Substitute a known-good SH-AWD control unit Service and Repair and recheck. If the symptom/indication goes away with the known-good SH-AWD control unit, replace the original SH-AWD control unit. Service and Repair


10. Check the rear differential fluid pressure.

Is there pressure when it is accelerating?
YES - Replace the rear differential center case. Rear Differential Center Case Replacement

NO - Replace the shift solenoid valve. Rear Differential Disassembly/Reassembly