2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2221
Replacement (See: Powertrain Management/Transmission Control Systems/Actuators and Solenoids - Transmission and
Drivetrain/Actuators and Solenoids - A/T/Shift Solenoid/Service and Repair).
2. Perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection (See: Transmission and Drivetrain/Automatic
Transmission/Transaxle/Testing and Inspection/Component Tests and General Diagnostics/6L45/6L50/6L80/6L90 - Automatic
Transmission/Control Solenoid Valve and Transmission Control Module Assembly Inspection).
3. Place the Q8 control solenoid valve assembly on a clean work surface near the transmission assembly.
4. Connect DT-47825-10 - jumper harness between the vehicle wire harness 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:
* High Side Driver 1 Circuit High Voltage Test Status
* High Side Driver 1 Circuit Open Test Status
* High Side Driver 1 Circuit Low Voltage Test Status
瀚慖f any test status parameter displays Fault or Malfunction, replace the Q8 control solenoid valve assembly.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Control Module References (See: Testing and Inspection/Programming and Relearning) for control solenoid valve assembly replacement,
setup, and programming.
* Perform the Service Fast Learn Adapts (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and
Inspection/Programming and Relearning) following all transmission related repairs.
6L50/6L80/6L90 - Automatic Transmission
DTC P0667, P0668, or P0669
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 Descriptors
DTC P0667
- Transmission Control Module (TCM) Temperature Sensor Performance
DTC P0668
- Transmission Control Module (TCM) Temperature Sensor Circuit Low Voltage
DTC P0669
- Transmission Control Module (TCM) Temperature Sensor Circuit High Voltage
Circuit/System Description
The transmission control module (TCM) temperature sensor is located inside of the control solenoid valve assembly which has no serviceable parts.
The TCM temperature sensor provides the temperature of the TCM. This temperature reading is used in various diagnostic routines in the TCM
software. This fault is handled inside the TCM and no external circuits are involved.
Conditions for Running the DTC
DTC P0667, P0668, or P0669
* DTCs P0667, P0716, P0717, P0722, or P0723 are not set.
* The TCM internal temperature is between -55掳C and +150掳C (-67掳F and +302掳F).
* The engine speed is 500 RPM or more for 5 seconds.
* The ignition voltage is 8.6V or greater.
Conditions for Setting the DTC
P0667 - Condition 1
* Vehicle speed is 8 km/h (5 mph) or greater for 5 minutes.
* Torque converter clutch (TCC) slip speed is greater than 150 RPM for 3 minutes.
* The TCM internal temperature is between -55掳C and +21掳C (-67掳F and +70掳F).
