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Home >> Chevy Truck >> 2012 >> Traverse AWD V6-3.6L >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> P Code Charts >> P0967

P0967




DTC P0965-P0967

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.

* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0965

-
Clutch Pressure Control (PC) Solenoid 2 System Performance

DTC P0966

-
Clutch Pressure Control (PC) Solenoid 2 Control Circuit Low Voltage

DTC P0967

-
Clutch Pressure Control (PC) Solenoid 2 Control Circuit High Voltage

Diagnostic Fault Information






Typical Scan Tool Data














Circuit/System Description

The clutch pressure (PC) solenoid 2 is part of the control solenoid valve assembly, which has no serviceable components. The normally high clutch PC solenoid 2 regulates and directs the clutch PC solenoid 2 oil pressure to the 3-5 reverse clutch regulator valve and 3-5 reverse clutch boost valve. Increasing clutch PC solenoid 2 pressure increases pressure to the 3-5 reverse clutch. The transmission control module (TCM) varies the current to the PC solenoid 2 through a low side driver. Decreasing the current to the clutch PC solenoid 2 increases clutch PC solenoid 2 oil pressure by closing OFF the solenoid exhaust port. Increasing the current to the clutch PC solenoid 2, decreases clutch PC solenoid 2 oil pressure by opening the solenoid exhaust port. Clutch PC solenoid 2 power is supplied by the TCM through a high side driver (HSD). The HSD protects the circuit and components from excessive current flow. If excessive current flow is detected, the HSD will turn OFF. When the fault is corrected, the HSD will reset.

Conditions for Running the DTC

P0965

* Engine speed is 400 RPM or greater for 5 seconds.

* Ignition voltage is 8.6 volts or greater.

* DTC P0965 is not set.

P0966

* Engine speed is 400 RPM or greater for 5 seconds.

* Ignition voltage is 8.6 volts or greater.

* DTC P0966 is not set.

P0967

* Engine speed is 400 RPM or greater for 5 seconds.

* Ignition voltage is 8.6 volts or greater.

* DTC P0967 is not set.

Conditions for Setting the DTC

P0965

TCM detects an internal electrical performance malfunction of the clutch PC solenoid 2 control circuit where the measured clutch PC solenoid 2 current does not equal the commanded clutch PC solenoid 2 current for 5 seconds.

P0966

TCM detects a short to ground on the clutch PC solenoid 2 control circuit for 1 second.

P0967

TCM detects an open or short to voltage on the clutch PC solenoid 2 control circuit for 1 second.

Action Taken When the DTC Sets

P0965

* DTC P0965 is a Type C DTC.

* TCM freezes transmission adaptive functions on the 3-5-Reverse clutch.

P0966

* DTC P0966 is a Type A DTC.

* TCM limits the transmission to Reverse and 3rd or 5th gear operation.

* TCM commands maximum line pressure.

* TCM freezes transmission adaptive functions.

* TCM turns the HSD OFF.

* TCM forces the torque converter clutch (TCC) OFF.

* TCM inhibits Tap Up/Down function.

* TCM inhibits manual shifting of forward gears.

* TCM inhibits neutral idle.

P0967

* DTC P0967 is a Type A DTC.

* TCM limits the transmission to Reverse and 3rd gear operation.

* TCM commands maximum line pressure.

* TCM freezes transmission adaptive functions.

* TCM inhibits Tap Up/Down function.

* TCM inhibits neutral idle.

* TCM inhibits manual shifting of forward gears.

Conditions for Clearing the DTC

* DTC P0965 is a Type C DTC.

* DTCs P0966 and P0967 are Type A DTCs.

Reference Information

Connector End View Reference

* Component Connector End Views A/C Compressor Clutch

* Inline Harness Connector End Views X100

Description and Operation

Transmission General Description Transmission General Description

Electrical Information Reference

* Circuit Testing Circuit Testing

* Connector Repairs Connector Repairs

* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections

* Wiring Repairs Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References Programming and Relearning for scan tool information

Special Tools

DT-47825-20 - Adapter Harness

For equivalent regional tools, refer to Special Tools Tools and Equipment.

Circuit/System Verification

1. Operate the vehicle in second gear long enough to ensure at least a 3°C (5°F) rise in TCM temperature, then operate the vehicle in Park for 5 seconds.

2. Operate the vehicle in Drive range. Allow the transmission to shift through all forward gear ranges. Verify with a scan tool the following test status parameters display OK:

* PC Sol. 2 Perf. Test Status

* PC Sol. 2 Ckt. High Voltage Test Status

* PC Sol. 2 Ckt. Low Voltage Test Status

• If any test status parameter displays Fault or Malfunction

Refer to Circuit/System Testing below.

• If all test status parameters display OK

3. After performing the above steps, verify that the DTC does not reset by operating the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions you observe from the Freeze Frame/Failure Records data. If the vehicle passes the Circuit/System Verification procedure, then STOP. Do not perform the Circuit/System Testing or Component Testing as this may result in an unnecessary part replacement. Refer to Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections.

Circuit/System Testing

Note:
You must perform the Circuit/System Verification first.

1. Ignition OFF, remove the Q8 control solenoid valve assembly. Refer to Control Solenoid Valve and Transmission Control Module Assembly Replacement Service and Repair.

2. Perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection Control Solenoid Valve and Transmission Control Module Assembly Inspection. The Q8 control solenoid valve and transmission control module assembly must be externally cleaned of all debris.

3. Place the Q8 control solenoid valve assembly on a clean work surface near the transmission assembly.

4. Connect the DT-47825-20 - harness between the vehicle wire harness X1 20-way transmission electrical connector, and the Q8 control solenoid valve assembly electrical connector.

5. Ignition ON, verify with a scan tool the following test status parameters display OK:

* PC Sol. 2 Perf. Test Status

* PC Sol. 2 Ckt. High Voltage Test Status

* PC Sol. 2 Ckt. Low Voltage Test Status

• If any test status parameter displays Fault or Malfunction

Replace the Q8 control solenoid valve assembly.

• If all test status parameters display OK

6. All OK.

Repair Instructions

Note:

* Perform the Reset Transmission Adapts Reset Transmission Adapts following all transmission related repairs.

* Before replacing the TCM, perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection Control Solenoid Valve and Transmission Control Module Assembly Inspection.

Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.

Control Module References Programming and Relearning for control solenoid valve assembly replacement, setup, and programming

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