Pinpoint Test D: Pressure Control (Pc) Solenoids (PCA, PCB, PCC)

WARNING: This page is about a different car, the 2009 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Refer to Transmission Connector Layouts .

NOTE: Read and record all DTCs. All digital transmission range (TR) sensor and vehicle speed sensor (VSS) DTCs must be repaired before entering output state control (OSC).

D1 ELECTRONIC DIAGNOSTICS
- Select PARK.
- Key in OFF position.
- Check to make sure the transmission harness connector is fully seated, terminals are fully engaged in the connector and in good condition before proceeding.
- Install 300 psi pressure gauges into Line and PC C tap.
- Connect the diagnostic tool.
- Key in ON position.
- Access the transmission PIDs.
- Is the scan tool able to access the transmission PIDs?
1. YES : Go to D2.
2. NO : REPEAT procedure to access the transmission PIDs. If the scan tool did not access the transmission PIDs, REFER to Introduction - Gasoline Engines for diagnosis of PCM.
D2 SOLENOID FUNCTIONAL TEST
- Monitor pressure gauges.
- With the engine running, command the PCA, PCB and PCC solenoids to change the pressure.
- For PC A and PC B: Does the pressure reading for A or B follow the commanded pressure (actual A and B pressures will be higher than the commanded pressure)? For PC C: Does the pressure reading match the commanded pressure?
1. YES : CLEAR DTCs.
2. NO : Go to D3.
D3 CHECK FOR BATTERY VOLTAGE
- Key in OFF position.
- Disconnect: Transmission Harness Connector C199
- Visually inspect all wires and connectors for damage.
- Key in ON position.
- Measure the voltage at C199-3, circuit 1862 (VT/WH) harness side.
- Is the voltage greater than 10 volts?
1. YES : Go to D4.
2. NO : REPAIR the circuit. TEST the system for normal operation.
D4 ELECTRICAL SIGNAL CHECK
- Measure the voltage between C199-3, circuit 1862 (VT/WH) harness side, and C199-1, circuit 966 (LB/PK), C199-4, circuit 912 (WH/RD) and C199-11, circuit 925 (WH/YE) harness side.
- Activate solenoids (ON and OFF) while monitoring the voltage reading.
- Does the voltage and solenoid state change?
1. YES : Go to D5.
2. NO : CHECK for open or short circuit in harness or PCM.
D5 CHECK SOLENOID RESISTANCE AT SOLENOID
- Measure the resistance between PC solenoid pin 3 and pins 1, 4 and 11 component side. Resistance should be between 3.3 and 7.5 ohms.
- Is the resistance within specifications?
1. YES : Go to D6.
2. NO : INSTALL a new solenoid body assembly.
D6 CHECK SOLENOID FOR SHORT TO GROUND
- Measure and record the resistance between the PC solenoid pins 1, 4, 11 and ground solenoid side.
- Is the resistance less than 10,000 ohms?
1. YES : INSTALL a new solenoid body assembly. TEST the system for normal operation.
2. NO : REFER to Diagnosis By Symptom for diagnosis of pressure concerns. TEST the system for normal operation.