2010 Cadillac CTS Sedan AWD V6-3.0L Page 1956

2010 Cadillac CTS Sedan AWD V6-3.0L Page 1956

瀚慖f less than the specified range, test the circuit for a short to ground or an open/high resistance. If the circuit/connection tests normal,

replace the K20 ECM.

瀚慖f greater than the specified range, test the circuit for a short to voltage. If the circuit/connection tests normal, replace the K20 ECM.

4. Connect a test lamp between the each of the ground circuits terminal A, and terminal B, and B+. The test lamp should illuminate on each

circuit.

瀚慖f the test lamp does not illuminate, test the suspected circuit for an open/high resistance.

5. If all circuits/connections test normal, replace the T8 ignition coil.

Repair Instructions

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

* Ignition Coil Replacement - Bank 1 (See: Powertrain Management/Ignition System/Ignition Coil/Service and Repair/Ignition Coil

Replacement - Bank 1)

* Ignition Coil Replacement - Bank 2 (See: Powertrain Management/Ignition System/Ignition Coil/Service and Repair/Ignition Coil

Replacement - Bank 2)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming

P2307

DTC P0351-P0356, P2300, P2301, P2303, P2304, P2306, P2307, P2309, P2310, P2312, P2313, P2315, or P2316 (w/LLT)

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 P0351

- Ignition Coil 1 Control Circuit

DTC P0352

- Ignition Coil 2 Control Circuit

DTC P0353

- Ignition Coil 3 Control Circuit

DTC P0354

- Ignition Coil 4 Control Circuit

DTC P0355

- Ignition Coil 5 Control Circuit

DTC P0356

- Ignition Coil 6 Control Circuit

DTC P2300

- Ignition Coil 1 Control Circuit Low Voltage

DTC P2301

- Ignition Coil 1 Control Circuit High Voltage

DTC P2303

- Ignition Coil 2 Control Circuit Low Voltage

DTC P2304

- Ignition Coil 2 Control Circuit High Voltage

DTC P2306

- Ignition Coil 3 Control Circuit Low Voltage