2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1189

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1189

瀚慖f the voltage is not within the specified range, replace the K20 ECM.

7. If all circuits test normal, test or replace the Q42 turbocharger wastegate solenoid valve.

Component Testing

1. Ignition OFF, disconnect the harness connector at the Q42 turbocharger wastegate solenoid valve.

2. Test for 20-30 ohm between the control terminal 2 and the ignition terminal 1 of the Q42 turbocharger wastegate solenoid valve.

瀚慖f not within the specified range, replace the Q42 turbocharger wastegate solenoid valve.

3. Test for infinite resistance between each terminal and the Q42 turbocharger wastegate solenoid valve housing.

瀚慖f not the specified value, replace the Q42 turbocharger wastegate solenoid valve.

Repair Instructions

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

* Turbocharger Disassemble (See: Engine, Cooling and Exhaust/Engine/Service and Repair/Overhaul/101. Turbocharger Disassemble)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for engine control module replacement, setup, and

programming

P0261

DTC P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, or P0277

(LAU)

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 P0201

- Cylinder 1 Injector Control Circuit

DTC P0202

- Cylinder 2 Injector Control Circuit

DTC P0203

- Cylinder 3 Injector Control Circuit

DTC P0204

- Cylinder 4 Injector Control Circuit

DTC P0205

- Cylinder 5 Injector Control Circuit

DTC P0206

- Cylinder 6 Injector Control Circuit

DTC P0261

- Cylinder 1 Injector Control Circuit Low Voltage

DTC P0262

- Cylinder 1 Injector Control Circuit High Voltage

DTC P0264

- Cylinder 2 Injector Control Circuit Low Voltage

DTC P0265

- Cylinder 2 Injector Control Circuit High Voltage