2010 Cadillac CTS Sedan AWD V6-3.0L Page 1953
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
P2306
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
