Pressure Test - PCA, PCB

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. Be sure that self test and electrical repairs have been performed or test results may be incorrect.

NOTE: The line pressure tap is used to verify output pressure from PCA or 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 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