Acceleration Device Test

Acceleration Device Test

NOTE:
- No DTC is detected.
- The SH-AWD control unit has been initialized.
- The shift lever is in P.

1. Raise the vehicle, and make sure it is securely supported.
2. Connect the HDS to the DLC (A).





3. Do the acceleration device test with the HDS.
4. Look at the results displayed on the HDS.
- If the acceleration ratio is lower than the normal value when decelerating is displayed, replace the rear differential assembly.
- If the acceleration ratio is higher than the normal value when decelerating is displayed, go to step 5.
- If the acceleration ratio is lower than the normal value when accelerating is displayed, go to step 10.
- If the acceleration ratio is higher than the normal value when accelerating is displayed, replace the SH-AWD control unit.

5. Remove the 6 mm bolt (A) from the differential (B) as shown.





6. Connect the pressure gauge (C) to the adapter, and install the assembly into the differential (B). Route the hose under the vehicle toward the front door.
7. Do the acceleration device test. When you get to the "Keep the speed constant between 22 and 28 mph" screen in the test, write down the pressure indicated on the pressure gauge. Complete the test.
- If the hydraulic pressure was over 8.0 kg/cm2, go to step 8.
- If the hydraulic pressure was below 13.0 kg/cm2, replace the rear differential assembly.

8. Replace the shift solenoid.
9. Do the acceleration device test.
- If Normal is displayed, the problem has been fixed.
- If the acceleration ratio is higher than the normal value when accelerating is displayed, replace the rear differential assembly.

10. Check the differential oil level. If the oil level was low, add oil as needed, then go to step 12. If the oil level was OK, go to step 11.
11. Do the acceleration device test. After the shift solenoid test (a portion of the acceleration device test) is complete, continue the acceleration device test. When you get to the Keep the speed constant between 22 and 28 mph screen, write down the pressure indicated on the pressure gauge. Complete the test.
- If the hydraulic pressure was less than 8.0 kg/cm2, go to step 12.
- If the hydraulic pressure was over 8.0 kg/cm2, replace the rear differential assembly.

12. Do the acceleration device test. Look at the results displayed on the HDS.
- If Normal is displayed, the problem has been fixed.
- If Acceleration device is abnormal is displayed, go to step 13.

13. Replace the shift solenoid, then do the acceleration device test.
- If Normal is displayed, the problem has been fixed.
- If Acceleration device is abnormal is displayed, replace the rear differential assembly.