2010 Cadillac CTS Sedan AWD V6-3.0L Page 1637

2010 Cadillac CTS Sedan AWD V6-3.0L Page 1637

pressure change should occur for each solenoid.

瀚慖f the Q8 control solenoid valve assembly does not pass the performance test, replace the Q8 control solenoid valve assembly.

4. Listed in the chart below are conditions for each component that could set DTC P0751 or P0752. Carefully inspect each component for that

condition. Repair or replace as necessary.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Replace the control solenoid valve assembly. Refer to Control Module References (See: Testing and Inspection/Programming and

Relearning) for replacement, setup, or programming.

* Perform the Service Fast Learn Adapts (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and

Inspection/Programming and Relearning/Service Fast Learn Adapts) following all transmission related repairs.

P0752

DTC P0751 or P0752

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptor

DTC P0751

- Shift Solenoid (SS) 1 Valve Performance - Stuck OFF

DTC P0752

- Shift Solenoid (SS) 1 Valve Performance - Stuck ON

Circuit/System Description

The shift solenoid (SS) 1 is part of the control solenoid valve assembly which has no serviceable parts. The control solenoid valve assembly is

attached to the lower control valve body. The solenoid operates by the TCM opening or closing the ground circuit. With the solenoid circuit

grounded (solenoid on), the internal plunger and metering ball block the exhaust fluid creating signal fluid pressure. The signal fluid acts against

the clutch select valve 2 to overcome the valve spring force moving it to the apply position, allowing the shift. The TCM shifts the transmission by

operating the solenoids in on/off combinations.

Conditions for Running the DTC

P0751 or P0752

* DTCs P0121, P0122, P0123, P0716, P0717, P0722, P0723, and P0182E are not set.

* Ignition voltage is 8.6 V or greater.

* The engine speed is 500 RPM or greater for 5 seconds.

* The IMS range is not PARK, NEUTRAL or REVERSE.

* High Side Driver (HSD) is enabled.

* The transmission fluid temperature is 0-130掳C (32-266掳F).

* Accelerator pedal position signal is valid.

* The throttle position signal is valid.