Pressure Test

Special Testing Procedures

Pressure Test - PCA, PCB

NOTICE: Carry out Pressure Tests for Pressure Control Solenoid A (PCA), Pressure Control Solenoid B (PCB) and Pressure Control Solenoid C (PCC) prior to carrying out Stall Speed Test. If line pressure is low at stall, do not carry out the Stall Speed Test or further transmission damage will occur. Do not maintain Wide Open Throttle (WOT) in any gear range for more than 5 seconds.

NOTE: Some sensor failures may cause high line pressure, failure mode effect management actions. Make sure that the electrical repairs and self-test have been performed or test results may be incorrect.

NOTE: The line pressure tap is used to verify output pressure from Pressure Control Solenoid A (PCA) or Pressure Control Solenoid B (PCB). Use pressure control PIDs and take note which solenoid, PCA or PCB, is commanded higher. Use the higher commanded pressure control solenoid value when referencing the Line Pressure Charts A and B. The second pressure tap is used to verify the output from the Pressure Control Solenoid C (PCC) solenoid.

This test verifies that the line pressure is within specifications.











1. Connect the Transmission Fluid Pressure Gauge to the line pressure tap.

2. Connect the scan tool and monitor the PCA and PCB PIDs. Note which PID is commanded higher. Use the higher commanded pressure control solenoid value when referencing the Line Pressure Charts A and B.

3. Start the engine and check the line pressure reading from the Transmission Fluid Pressure Gauge. Refer to the Line Pressure Chart for the correct selector lever position.

4. If the line pressure is not within ranges given in Line Charts A and B, refer to Line Pressure Diagnosis Chart for line pressure concern causes.

5. Go to the PCC Pressure Test.











Pressure Test - PCC

This test verifies that PCC is functioning correctly within specifications.











1. If not previously connected, install the scan tool.

2. Connect the Transmission Fluid Pressure Gauge to the PCC pressure tap.

3. Using the scan tool, monitor the PCC PID and note the commanded pressure.

4. Start the engine and check the PCC pressure. If the Transmission Fluid Pressure Gauge reading does not match within ± 15 psi of PID value displayed for PCC, GO to Pinpoint Test D Pinpoint Test D: Pressure Control Solenoids to diagnose PCC operation. If PCC operation is OK, refer to Line Pressure Diagnosis Chart for line pressure concern causes.

5. When pressure tests are completed, install the pressure tap plugs.
- Tighten to 13 Nm (115 lb-in).

Line Pressure Diagnosis Chart