Rear Differential Pressure Test

NOTE: Before doing the pressure test, check the following conditions.
Check that the AWD system indicator does not come on. If it does, check for AWD with intelligent control system DTCs.
Check the rear differential fluid level.
Check for rear differential fluid leaks at the rear differential assembly.

2. Rear Differential Fluid Pressure - Test
1.
Select DATA LIST in the AWD WITH INTELLIGENT CONTROL with the HDS.
2.
Select OIL TEMPERATURE FOR REAR DIFFERENTIAL in the DATA LIST with the HDS.
If the temperature is above 68 °F (20 °C), go to step 3.
If the temperature is below 68 °F (20 °C), drive the vehicle to warm up the rear differential until fluid temperature reaches at least 68 °F (20 °C), then go to step 3.
3.
Start the engine.
4.
Select FUNCTIONAL TEST in the AWD WITH INTELLIGENT CONTROL with the HDS.
5.
Select OIL PRESSURE CONTROL TEST in the FUNCTIONAL TEST with the HDS.
6.
Check the results displayed on the HDS.
If Normal is displayed, the test is completed.
If 1-1 is displayed, go to steps 7 through 21.
If 2-1 and 5-1 are displayed: go to steps 22 through 36.
If 3-1 is displayed: go to steps 37 through 50.
If 4-1 and 6-1 are displayed: go to steps 51 through 58.
7.
Turn the vehicle to the OFF (LOCK) mode.
8.
Disconnect the connector (A).
9.
Remove the rear differential fluid pressure sensor (B).
10.
Reconnect the connector (A) to the rear differential fluid pressure sensor (B).
11.
Turn the vehicle to the ON mode.
12.
Select the DATA LIST in the AWD WITH INTELLIGENT CONTROL with the HDS.
13.
Check the ACTUAL OIL PRESSURE OF THE OIL PRESSURE SENSOR FOR REAR DIFFERENTIAL in the DATA LIST with the HDS.
If the fluid pressure is not within -30?30 kPa (-0.31?0.31 kgf/cm2, -4.4?4.4 psi), replace the rear differential fluid pressure sensor.
If the fluid pressure is within the range of -30?30 kPa (-0.31?0.31 kgf/cm2, -4.4?4.4 psi), go to step 14.
17.
Start the engine.
18.
Select FUNCTIONAL TEST in the AWD WITH INTELLIGENT CONTROL with the HDS.
19.
Select OIL PRESSURE CONTROL TEST in the FUNCTIONAL TEST with the HDS.
20.
Check the results displayed on the HDS.
If Normal is displayed, the test is completed.
If 1-1 is displayed: go to step 21.
22.
Turn the vehicle to the OFF (LOCK) mode.
23.
Turn the vehicle to the ON mode.
25.
Start the engine.
26.
Select FUNCTIONAL TEST in the AWD WITH INTELLIGENT CONTROL with the HDS.
27.
Select OIL PRESSURE CONTROL TEST in the FUNCTIONAL TEST with the HDS.
28.
Check the results displayed on the HDS.
If Normal is displayed, intermittent failure, the system is OK at this time, the test is completed.
If 2-1 and 5-1 are displayed: go to step 29.
31.
Start the engine.
32.
Select FUNCTIONAL TEST in the AWD WITH INTELLIGENT CONTROL with the HDS.
33.
Select OIL PRESSURE CONTROL TEST in the FUNCTIONAL TEST with the HDS.
34.
Check the results displayed on the HDS.
If Normal is displayed, the test is completed.
If 2-1 and 5-1 are displayed: go to step 35.
36.
Do the rear differential fluid pressure sensor test and the rear differential solenoid valve test with the HDS. If the rear differential fluid pressure sensor test and the rear differential solenoid valve test is OK, replace the rear differential assembly.
37.
Turn the vehicle to the OFF (LOCK) mode.
38.
Turn the vehicle to the ON mode.
40.
Start the engine.
41.
Select FUNCTIONAL TEST in the AWD WITH INTELLIGENT CONTROL with the HDS.
42.
Select OIL PRESSURE CONTROL TEST in the FUNCTIONAL TEST with the HDS.
43.
Check the results displayed on the HDS.
If Normal is displayed, intermittent failure, the system is OK at this time, the test is completed.
If 3-1 is displayed: go to step 44.
46.
Start the engine.
47.
Select FUNCTIONAL TEST in the AWD WITH INTELLIGENT CONTROL with the HDS.
48.
Select OIL PRESSURE CONTROL TEST in the FUNCTIONAL TEST with the HDS.
49.
Check the results displayed on the HDS.
If Normal is displayed, the test is completed.
If 3-1 is displayed: go to step 50.
51.
Turn the vehicle to the OFF (LOCK) mode.
54.
Start the engine.
55.
Select FUNCTIONAL TEST in the AWD WITH INTELLIGENT CONTROL with the HDS.
56.
Select OIL PRESSURE CONTROL TEST in the FUNCTIONAL TEST with the HDS.
57.
Check the results displayed on the HDS.
If Normal is displayed, the test is completed.
If 4-1 and 6-1 are displayed: go to step 58.