SH-AWD Function Test
SH-AWD Function TestSpecial Tools Required
Adapter, torque wrench 070AJ-SJAA101
Direct Electromagnetic Clutch Test
NOTE:
- No DTC was detected.
- The shift lever is in N.
- The SH-AWD control unit had been initialized.
- The tire pressures are at the specified value.
- Tire wear is the same between the left and right tires.
1. Check that the differential oil temperature is over 20°C (68°F) with the HDS. If it is below 20°C (68°F), raise the temperature by driving the vehicle in circles or by constantly turning.
2. Raise the vehicle, and make sure it is securely supported.
3. Remove the rear wheels.
4. Connect the HDS to the DLC.
5. Do the direct electromagnetic clutch test with the HDS.
6. Install the special tool on the rear wheel hub.
7. Install a torque wrench on the special tool as shown on the HDS. Write down the torque value while slowly rotating the rear hub with the torque wrench as shown. (Turn the hub no more than 90 degrees in 7 to 10 seconds.)
NOTE: Use a torque wrench capable of measuring up to 50 kgf-m (360 lbf-ft) such as a commercially available Snap-on torque wrench TE352FUE.
8. Enter the torque value into the HDS, and wait for the test to finish.
- If the result shows the clutch driving force is normal, the clutch assembly is OK.
- If the result shows the clutch driving force is abnormal, replace the differential oil, and retest. If the result still shows the clutch driving force is abnormal, replace the rear differential side case.
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 center case.
- 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/cm, go to step 8.
- If the hydraulic pressure was below 8.0 kg/cm', replace the rear differential center case.
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.