Pinpoint Test D: PCA Solenoid
Pinpoint Tests - OSC Equipped Vehicle
Pinpoint Tests
PINPOINT TEST D: PCA SOLENOID
NOTE: Refer to the Transaxle Vehicle Harness Connector illustration within the Transaxle Connector Layouts Transaxle Connector Layouts procedure.
NOTE: Read and record all DTCs.
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D1 ELECTRONIC DIAGNOSTICS SET UP
- Make sure the transaxle harness connector is fully seated, the terminals are fully engaged in connector and are in good condition before proceeding.
- Connect the scan tool.
- Ignition ON.
- Access the pressure control A (PCA) solenoid PIDs.
- Is communication with the PCM established?
Yes
GO to D2.
No
REPEAT procedure to access the PCA solenoid PIDs. If the scan tool cannot establish communication with the PCM, REFER to Computers and Control Systems Information for diagnosis of PCM.
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D2 SOLENOID FUNCTIONAL TEST
- Remove the line pressure tap plug.
- Install a 1/8 x 28-to-1/8 x 28 pipe thread adapter into the line pressure tap.
- Install the Pressure Gauge assembly on the adapter.
- Select PCA#.
- Increase engine speed above 1,500 rpm.
- Using the scan tool, increase the line pressure while monitoring the pressure gauge.
- Once the test is complete, remove the 1/8 x 28-to-1/8 x 28 pipe thread adapter and install the line pressure tap plug.
- Tighten to 13 Nm (115 lb-in).
- Does the pressure reading change when commanded?
Yes
CLEAR the DTCs. TEST the system for normal operation.
No
GO to D3.
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D3 CHECK THE VEHICLE HARNESS FOR A SHORT TO POWER
- Ignition OFF.
- Disconnect: Transaxle Vehicle Harness C199.
- Disconnect: PCM C175T.
- Visually inspect all wires and connectors for damage.
- Ignition ON.
- Measure the voltage between transaxle vehicle harness C199-2, circuit CET25 (BU/GN) and ground.
- Measure the voltage between transaxle vehicle harness C199-7, circuit CET05 (BU/GN) and ground.
- Is any voltage present?
Yes
REPAIR the circuit for a short to power. CLEAR the DTCs. TEST the system for normal operation.
No
GO to D4.
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D4 CHECK THE VEHICLE HARNESS FOR A SHORT TO GROUND
- Measure the resistance between transaxle vehicle harness C199-2, circuit CET25 (BU/GN) and ground.
- Measure the resistance between transaxle vehicle harness C199-7, circuit CET05 (BU/GN) and ground.
- Is the resistance greater than 10,000 ohms?
Yes
GO to D5.
No
REPAIR the circuit(s) for a short to ground. CLEAR the DTCs. TEST the system for normal operation.
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D5 CHECK THE VEHICLE HARNESS FOR AN OPEN CIRCUIT
- Ignition OFF.
- Measure the resistance between transaxle vehicle harness C199-2, circuit CET25 (BU/GN) and PCM C175T-50, circuit CET25 (BU/GN).
- Measure the resistance between transaxle vehicle harness C199-7, circuit CET05 (BU/GN) and PCM C175T-43, circuit CET05 (BU/GN).
- Is the resistance less than 5 ohms?
Yes
GO to D6.
No
REPAIR the circuit for an open. CLEAR the DTCs. TEST the system for normal operation
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D6 CHECK SOLENOID RESISTANCE
- Measure the resistance between transaxle C199-2, component side and C199-7, component side.
- Is the resistance between 2.4 and 7.3 ohms?
Yes
INSTALL a new PCM. REFER to Electronic Engine Controls Service and Repair.
No
GO to D7.
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D7 CHECK THE TRANSAXLE INTERNAL WIRING HARNESS FOR A SHORT TO GROUND
- Remove the transmission fluid pan. Refer to Transmission Fluid Pan Service and Repair.
- Disconnect the Line Pressure Control (LPC) electrical connector.
- Measure the resistance between transaxle vehicle harness connector pin 2 (component side, transaxle internal harness) and ground.
- Measure the resistance between transaxle vehicle harness connector pin 7 (component side, transaxle internal harness) and ground.
- Is the resistance greater than 10,000 ohms?
Yes
GO to D8.
No
INSTALL a new transaxle internal harness. CLEAR the DTCs. TEST the system for normal operation.
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D8 CHECK THE TRANSAXLE INTERNAL HARNESS FOR AN OPEN
- Measure the resistance between transaxle vehicle harness connector pin 2 (component side, transaxle internal harness) and transaxle internal harness connector pin 2.
- Measure the resistance between transaxle vehicle harness connector pin 7 (component side, transaxle internal harness) and transaxle internal harness connector pin 7.
- Is the resistance less than 5 ohms?
Yes
INSTALL a new LPC solenoid. CLEAR the DTCs. TEST the system for normal operation.
No
INSTALL a new transaxle internal harness. CLEAR the DTCs. TEST the system for normal operation.
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