2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1616

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1616

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Perform the Transmission Fluid Level and Condition Check (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing

and Inspection/Component Tests and General Diagnostics/6T70/6T75 - Automatic Transmission/Transmission Fluid Level and Condition

Check) to verify correct fluid level and condition.

2. Engine idling in Park, verify with a scan tool the Transmission ISS/OSS Supply Voltage parameter displays OK.

3. Engine idling in Park. Observe the Transmission ISS parameter on the scan tool, while varying the engine speed. The Transmission ISS

parameter should vary with engine speed and not drop out.

4. Operate the vehicle at 16-32 km/h (10-20 mph) while observing the Transmission OSS parameter on the scan tool. The Transmission OSS

parameter should vary with the vehicle speed and not drop out.

Note: Perform a scan tool snapshot, during the road test.

5. Perform the Road Test (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and Inspection/Initial Inspection and

Diagnostic Overview). Verify the transmission operation performs as indicated, in the road test instructions.

6. Review the scan tool snapshot transmission data parameters. Verify the engine and transmission data parameters display the correct values in

all forward gear ranges:

* Engine Speed

* ECT

* Transmission ISS

* Transmission OSS

* Vehicle Speed

* Trans. Fluid Temp.

* TCC PC Sol. Pressure Command

* TCC Slip Speed

7. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Perform the Line Pressure Check (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and Inspection/Component

Tests and General Diagnostics/6T70/6T75 - Automatic Transmission/Line Pressure Check). Verify the transmission line pressures are within

the specified ranges.

瀚慖f not within the specified ranges, refer to Fluid Pressure High or Low (See: Transmission and Drivetrain/Automatic

Transmission/Transaxle/Testing and Inspection/Symptom Related Diagnostic Procedures/6T70/6T75 - Automatic Transmission/Fluid

Pressure High or Low).

2. Ignition OFF, remove the control solenoid valve assembly. Refer to Control Solenoid Valve and Transmission Control Module Assembly

Replacement (See: Powertrain Management/Transmission Control Systems/Actuators and Solenoids - Transmission and

Drivetrain/Actuators and Solenoids - A/T/Shift Solenoid/Service and Repair).

3. Perform the Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test (See: Transmission and

Drivetrain/Automatic Transmission/Transaxle/Testing and Inspection/Component Tests and General Diagnostics/6T70/6T75 - Automatic

Transmission/Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test). Test all solenoids on the

control solenoid valve assembly. A pressure change should occur for each solenoid.

瀚慖f the control solenoid valve assembly does not pass the performance test, replace the control solenoid valve assembly.

4. Listed in the table below are conditions for each component that could set DTC P0741 or P0742. Carefully inspect each component for that

condition. Repair or replace as necessary.