Acceleration Device Test Acura RL II facelift

Acceleration Device Test

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

Scheme 120

Scheme 121

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 (see «CENTER CASE REPLACEMENT»(ref-348515-S37249787082009112400000) ). 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 (see «SH-AWD CONTROL UNIT REPLACEMENT»(ref-348515-S38388143332009112400000) ).
5. Remove the 8 mm bolt (A) and the sealing washer (B) from the differential (C) as shown. NOTE: Install the parts in the reverse older of removal with a new sealing washer.
6. Connect the oil pressure gauge (D), the oil pressure hose (E) and the oil pressure hose adapter (F), then install the assembly into the differential. 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 mph (41 km/h) and 28 mph (52 km/h)" screen in the test, write down the pressure indicated on the pressure gauge. Complete the test. If the hydraulic pressure was over 8.0 kgf/cm 2 (113 psi), go to step 8. If the hydraulic pressure was below 8.0 kgf/cm 2 (113 psi), replace the rear differential center case (see «CENTER CASE REPLACEMENT»(ref-348515-S37249787082009112400000) ).
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 fluid level (see «REAR DIFFERENTIAL FLUID INSPECTION AND REPLACEMENT»(ref-348515-S18898152482009112400000) ). If the fluid level was low, add oil as needed, then go to step 1 . If the fluid 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 mph (41 km/h) and 28 mph (52 km/h)" screen, write down the pressure indicated on the pressure gauge. Complete the test. If the hydraulic pressure was less than 8.0 kgf/cm 2 (113 psi), go to step 12. If the hydraulic pressure was over 8.0 kgf/cm 2 (113 psi), 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 (see «REAR DIFFERENTIAL DISASSEMBLY/REASSEMBLY»(ref-348515-S00545425972009112400000) ), 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 center case (see «CENTER CASE REPLACEMENT»(ref-348515-S37249787082009112400000) ).

Scheme 122

1. Park the vehicle on level ground, and turn the ignition switch to LOCK (0).
2. Use solvent and a brush to wash any oil and dirt off the differential fluid inspection oil filler plugs.
3. Remove each filler plug (A) and the sealing washer (B), then check the condition of the fluid, and make sure the fluid is at the proper level (C).
4. The fluid level must reach up the bottom of the filler plug hole. If it is below the hole, add the recommended fluid until it runs out, then reinstall the filler plug with a new sealing washer.

Scheme 123

1. Park the vehicle on level ground, and turn the ignition switch to LOCK (0).
2. Remove the filler plug (A) and the sealing washer (B). Fluid Capacity 2.66 L (2.81 US qt) at fluid change 3.11 L (3.29 US qt) at overhaul Recommended fluid: Acura ATF-Z1
3. Remove the drain plug (C) and the sealing washer (D), and drain the fluid.
4. Reinstall the drain plug with a new sealing washer.
5. Add fluid until it reaches the bottom of the filler plug hole.
6. Reinstall the filler plug with a new sealing washer.

Scheme 124

1. Park the vehicle on level ground, and turn the ignition switch to LOCK (0).
2. Remove the filler plug (A) and the sealing washer (B). Fluid Capacity 0.73 L (0.77 US qt) at fluid change 0.75 L (0.79 US qt) at overhaul Recommended fluid: Acura ATF-Z1
3. Remove the drain plug (C) and the sealing washer (D), and drain the fluid.
4. Reinstall the drain plug with a new sealing washer.
5. Add fluid until it reaches the bottom of the filler plug hole.
6. Reinstall the filler plug with a new sealing washer.

Scheme 125

1. Drain the differential fluid (see «REAR DIFFERENTIAL FLUID INSPECTION AND REPLACEMENT»(ref-348515-S18898152482009112400000) ).
2. Remove the differential fluid temperature sensor cover (A), then disconnect the differential fluid temperature sensor connector (B).
3. Remove the differential fluid temperature sensor (C).
4. Install the differential fluid temperature sensor with a new O-ring (D) in the reverse order of removal.
5. Refill the differential fluid (see «REAR DIFFERENTIAL FLUID INSPECTION AND REPLACEMENT»(ref-348515-S18898152482009112400000) ).

Scheme 126

1. Disconnect the hypoid gear speed sensor connector (A).
2. Remove the hypoid gear speed sensor (B).
3. Install the hypoid gear speed sensor with a new O-ring (C) in the reverse order of removal.