Diagnostic Instructions

DTC Descriptors

DTC P0976:  Shift Solenoid (SS) 2 Control Circuit Low Voltage

DTC P0977:  Shift Solenoid (SS) 2 Control Circuit High Voltage

Diagnostic Fault Information

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
Shift Solenoid (SS) 2 Control	P0976	P0977	P0977	--
Shift Solenoid (SS) 2 High Side Driver 2	P1833	P1833	P1834	--

Typical Scan Tool Data

Shift Solenoid (SS) 2

Circuit	Short to Ground	Open/High Resistance	Short to Voltage
Operating Conditions: Engine running, normal operating temperature Parameter Normal Range: OK
Shift Sol. 2 CKT Status	Short to GND	Open	Short to Volts
High Side Driver 2 CKT Status	Open/Short to GND	Open/Short to GND	Short to Volts

Circuit/System Description

The shift solenoid (SS) 2 is part of the control solenoid (w/body and TCM) valve assembly and is not serviced separately. The TCM supplies 12 volts to SS 2 on the high side driver 2 circuit. The TCM controls the normally closed SS 2 on the SS 2 control circuit. The SS 2 controls the transmission fluid to the Mode-3 valve. In the ON position the 4-5-6 clutch is fed by drive fluid. In the OFF position, Reverse fluid is allowed to flow and is supplied to the low and reverse clutch and the 4-5-6 clutch assemblies.

Conditions for Running the DTC

Conditions for Setting the DTC

P0976

The TCM detects an internal low voltage electrical malfunction of the SS 2 control circuit when the SS 2 is commanded OFF for 300 milliseconds.

P0977

The TCM detects an internal high voltage electrical malfunction of the SS 2 control circuit when the SS 2 is commanded ON for 300 milliseconds.

Action Taken When the DTC Sets

Conditions for Clearing the DIC/DTC

DTCs P0976 and P0977 are Type A DTCs.

Diagnostic Aids

When attempting to set solenoid electrical DTCs, ensure the TCM is warmed up and the transmission is operated in 2nd gear 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.

Reference Information

Schematic Reference

Automatic Transmission Controls Schematics

Connector End View Reference

DTC Type Reference

Electrical Information Reference

Scan Tool Reference

Scan Tool Parameter Data

Circuit	Normal Circuit Voltage	Scan Data - Circuit Open	Scan Data - Circuit Grounded	Scan Data - Circuit Shorted to Voltage
Shift Sol. 2 CKT Status	OK	Open	Short to GND	Short to Volts
High Side Driver 2 CKT Status	OK	Open/Short to GND	Open/Short to GND	Short to Volts

Circuit/System Testing

1. Ensure the transmission fluid temperature is between 50-80°C (122-176°F).
2. Operate the vehicle in 4th, 5th, or 6th gear with TCC applied, long enough to ensure at least a 3°C (5°F) rise in TCM substrate temperature.
3. Observe the scan tool data parameter Shift Sol. 2 CKT Status. The parameter should display 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 .

⇒	If no concerns are found during the inspection, replace the control solenoid (w/body and TCM) valve assembly.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.