Line Pressure Check
Special Tools
EN 21867 Pressure Gauge
For equivalent regional tools, refer to
Special Tools .
Warning: Keep the brakes applied
at all times in order to prevent unexpected vehicle motion.
Personal injury may result if the vehicle moves
unexpectedly.
- Install a scan tool.
- Start the engine.
- Inspect the transmission for the proper fluid level.
Refer to
Transmission Fluid Level Inspection .
- Use the scan tool to inspect for any active or stored
diagnostic trouble codes.
- Inspect the manual linkage at the transmission for
proper function.
- Turn the engine OFF.
- Remove the line pressure test hole plug.
- Install the EN 21867 Pressure
Gauge.
- Access the Scan Tool Transmission Output Controls for
the Line PC Solenoid.
- Start the engine.
Note:
• |
In order to achieve accurate
line pressure readings, the following procedure must be performed
at least 3 times in order to gather uniform pressure
readings. |
• |
The scan tool is only able to
control the line PC solenoid in PARK and NEUTRAL with engine speeds
below 1500 RPM. This protects the clutches from extreme high
or low line pressures. |
- Use the scan tool to increase and decrease the Line PC
Solenoid in increments of approximately 100 KPa (15 psi).
The scan tool commands the increment values automatically.
- Allow the pressure to stabilise between
increments.
- Compare the pressure readings on the scan tool to
those indicated on the EN 21867 Pressure Gauge.
- If the pressure readings vary greatly, refer to
Fluid Pressure High or Low .
- Turn the engine OFF.
- Remove the EN 21867 Pressure Gauge.
Caution: Refer to
Fastener Caution in the Preface
section.
- Install the line pressure test hole plug. Tighten the
pressure test hole plug to 12 N·m
(106 lb in) .
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