• | 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 2 Control | P0966 | P0977 | P0977 | P0965 |
Clutch PC Solenoid 2 High Side Driver 2 | P1833 | P1833 | P1834 | P0965 |
Circuit | Normal Range | Short to Ground | Open | Short to Voltage |
---|---|---|---|---|
Operating Conditions: Key ON, Engine OFF or Engine running, normal operating temperature | ||||
Clutch PC 2 Sol. CKT Status | OK | Short to GND | Open/Short to Volts | Open/Short to Volts |
High Side Driver 2 CKT Status | OK | Open/Short to GND | Open/Short to GND | Short to Volts |
The clutch pressure control (PC) solenoid 2 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 clutch PC solenoid 2 on the high side driver 2 circuit. The TCM control the PC solenoid 2 through the clutch PC solenoid 2 control circuit. The normally high clutch PC solenoid 2 flows fluid to the 3-5-R clutch when commanded OFF and exhausts fluid when commanded ON. The clutch PC 2 regulates the transmission fluid pressure to the 3-5-R clutch.
Start the ignition switch, run the engine.
• | DTC P0966 is not set. |
• | Start the ignition switch, run the engine. |
• | DTC P0967 is not set. |
• | Start the ignition switch, run the engine. |
The TCM detects an internal electrical performance malfunction of the clutch PC solenoid control circuit and the actual 3-5-R clutch pressure does not equal the commanded 3-5-R clutch pressure for 4.4 seconds in the 5 seconds sample time.
The TCM detects an internal low voltage electrical malfunction of the clutch PC solenoid control circuit for 300 milliseconds in the 375 milliseconds sample time.
The TCM detects an internal high voltage electrical malfunction of the clutch PC solenoid control circuit for 300 milliseconds in the 375 milliseconds sample time.
• | DTC P0965 is a type C DTC. |
• | DTCs P0966 and P0967 is a type A DTC. |
• | The TCM defaults the transmission to a limited shift pattern, 2 forward gears and reverse, based on the fault detected. |
• | The TCM commands maximum line pressure. |
• | The TCM freezes transmission adaptive functions. |
• | DTC P0965 is a type C DTC. |
• | DTCs P0966 and P0967 is a type A DTC. |
When attempting to set DTCs, it may be helpful to ensure the TCM is warmed up and the transmission is operated in second gear long enough to ensure a 3°C (5°F) increase in TCM temperature. This will place the TCM under the optimal conditions to test DTCs.
Automatic Transmission Controls Schematics
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 Clutch PC 2 Sol. CKT Status normally displays OK.
If the parameter displays Open/Short to Volts, 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 TCM replacement, setup, and programming |