Tools Required
• | J 35752 Oil Pressure Gage Adapter |
• | J 21867 Universal Pressure Gage
Set |
Important: This test should only be performed at a normal operating fluid temperature
of 50-80°C (122-176°F).
- Raise the vehicle. Support the vehicle. Refer to
Lifting and Jacking the Vehicle
in General Information.
- Remove the left splash shield from vehicle. Refer to
Engine Splash Shield Replacement - Left Side
in Body Front End.
- Remove the pressure tap bolt (2) from
the rear of the transaxle.
- Install J 35752
into the line pressure tap at the rear of the transaxle.
- Install J 21867
into J 35752
.
- Lower the vehicle.
- Route J 21867
hose over the front
fender and through the driver's window so that it can be read from the passenger compartment.
- Connect the scan tool to the Data Link Connector (DLC) and display the
engine RPM.
- Apply the parking brake and block the vehicle wheels.
- Press the brake pedal fully and start the engine.
- Display engine speed (RPM) on the scan tool.
Caution: For the following four steps, procedures for testing line pressure at
idle and stall speeds, the brake pedal must be fully pressed throughout the
measurement procedure. Failure to do so could result in personal injury and/or
property damage.
- Place the manual selector in the drive (D)
range and record the line pressure at idle speed (600-700 RPM).
Notice: DO NOT run engine at stall speed for more than five seconds continuously
or engine oil and transaxle fluid temperatures may become excessively high.
- Press the accelerator pedal fully/wide open
throttle and record the line pressure in the drive (D) range at stall speed (2,400-2,700 RPM).
Release the accelerator pedal.
- Keeping the brake pedal fully pressed, place the selector lever in the
reverse (R) range and record the line pressure at idle speed (600-700 RPM).
- Press the accelerator pedal fully/wide open throttle and record the line
pressure in the reverse (R) range at stall speed (2,400-2,700 RPM).
Release the accelerator pedal.
- Keep brake pedal fully pressed.
- Place manual selector in Low range. Record line pressure at idle speed
(600-700 RPM).
- Press accelerator pedal fully/wide open throttle and record line pressure
in Low range at stall speed (2,400-2,700 RPM). Release accelerator
pedal.
- Keeping brake pedal fully pressed, place manual selector in Reverse range
and record line pressure at idle speed (600-700 RPM).
- Press accelerator pedal fully/wide open throttle and record line pressure
in Reverse range at stall speed (2,400-2,700 RPM). Release accelerator
pedal.
- Place manual selector in Park range and turn ignition switch to LOCK.
- Remove the scan tool from the vehicle.
- Remove J 21867
from the passenger
compartment.
- Raise the vehicle. Support the vehicle. Refer to
Lifting and Jacking the Vehicle
in General Information.
- Remove J 21867
from J 35752
.
- Remove J 35752
from the line pressure
tap at the rear of the transaxle.
Notice: Use the correct fastener in the correct location. Replacement fasteners
must be the correct part number for that application. Fasteners requiring
replacement or fasteners requiring the use of thread locking compound or sealant
are identified in the service procedure. Do not use paints, lubricants, or
corrosion inhibitors on fasteners or fastener joint surfaces unless specified.
These coatings affect fastener torque and joint clamping force and may damage
the fastener. Use the correct tightening sequence and specifications when
installing fasteners in order to avoid damage to parts and systems.
- Install the line pressure tap bolt into the line pressure tap at the rear of
the transaxle.
Tighten
Tighten the line pressure tap bolt to 7.5 N·m (66 lb in).
- Install the left splash shield. Refer to
Engine Splash Shield Replacement - Left Side
in
Body Front End.
- Lower the vehicle.
Evaluation
Compare the line pressure test results with the Line Pressure Results in the
following table. If the line pressure is not as specified, refer to the Line Pressure
Test Diagnosis for further evaluation.
Line Pressure Results
Engine Running at
| R Range Line Pressure
| D, 2, L Range Line Pressure
|
Idle Speed (600-700 RPM)
| 553-623 kPa (80-100 psi
| 372-412 kPa
(54-60 psi)
|
Stall Speed (2400-2700 RPM)
| 1,764-1,964 kPa (256-284 psi
| 1,126-1,226 kPa (164-178 psi)
|
Line Pressure Test Diagnosis
Line Pressure Measurement
| Probable Cause
|
Higher than Specification in Drive (D) and Reverse (R)
Ranges
|
• | Pressure regulator valve malfunction |
• | Throttle valve malfunction |
• | Out of adjustment accelerator |
|
Lower than Specification in Drive (D) and Reverse (R) Ranges
|
• | Pressure regulator valve malfunction |
• | Throttle valve malfunction |
• | Out of adjustment accelerator cable |
|
Lower than Specification in Drive (D) Range Only
|
• | Forward clutch fluid circuit leak |
• | Drive (D) range fluid circuit leak |
|
Lower than Specification
in Reverse (R) Range Only
|
• | Direct clutch fluid circuit leak |
• | 1st-reverse brake fluid circuit leak |
• | Reverse (R) range fluid circuit leak |
|