• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
• | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
Clutch PC Solenoid 5 Control | P2729 | P2730 | P2730 | P2728 |
Circuit | Short to Ground | Open | Short to Voltage |
---|---|---|---|
Operating Conditions: Engine running, normal operating temperature Parameter Normal Range: OK | |||
PC 5 Sol. CKT Status | Short to GND | Open/Short to Volts | Open/Short to Volts |
The clutch pressure control (PC) solenoid 5 is part of the control solenoid (w/body and TCM) valve assembly and is not serviced separately. The transmission control module (TCM) supplies 12 volts to the PC solenoid 5 through the high side driver 1 circuit. The TCM controls the PC solenoid 5 through the PC solenoid 5 control circuit. The normally low PC solenoid 5 flows fluid to the actuator feed limit valve when commanded ON and exhausts fluid when commanded OFF. The clutch PC solenoid 5 regulates the transmission fluid pressure from the auxiliary transmission fluid pump in order to maintain transmission fluid pressure during electric only and auto-stop modes.
• | The engine run time is greater than 5 seconds. |
• | The vehicle speed is less than 200 km/h (124 mph) for 5 seconds. |
• | The system voltage is 11-18 volts. |
The TCM detects an internal electrical performance malfunction of the clutch PC solenoid 5 control circuit when the actual pressure does not equal the commanded pressure for 5 seconds.
The TCM detects an internal low voltage electrical malfunction of the clutch PC solenoid 5 control circuit for 500 milliseconds.
The TCM detects an internal high voltage electrical malfunction of the clutch PC solenoid 5 control circuit for 500 milliseconds
• | DTC P2728 is a Type B DTC. |
• | DTCs P2729 and P2730 are Type A DTCs. |
• | The TCM defaults the transmission to a limited shift pattern utilizing 2 forward gears and reverse based on the default detected. |
• | The TCM commands maximum line pressure. |
• | The TCM freezes transmission adaptive functions. |
• | DTC P2728 is a Type B DTC. |
• | DTCs P2729 and P2730 are Type A DTCs. |
When attempting to set solenoid electrical DTCs, ensure the TCM is warmed up and the transmission is operated long enough to ensure a 3°C (5°F) increase in TCM substrate temperature. This will place the TCM under the optimal conditions to test solenoid electrical DTCs.
Automatic Transmission Controls Schematics
• | Circuit Testing |
• | Wiring Repairs |
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Perform the following procedure to place the control solenoid (w/body and TCM) valve assembly under the optimal conditions to test solenoid electrical DTCs.
The scan tool data parameter PC 5 Sol. CKT Status normally displays OK.
⇒ | If the parameter displays Open/Short to Volts or Short to GND or if the DTC resets, perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection , and if no concerns are found, replace the control solenoid (w/body and TCM) valve assembly. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for control solenoid (w/body and TCM) valve assembly replacement, setup, and programming.