2010 Cadillac CTS Sedan AWD V6-3.6L Page 1310
verify that each test signal output response is within range. If the ECM detects that any of the test signals are not within range, this DTC sets.
Test Two
The ECM internally turns OFF the knock sensor signal circuits. The ECM then tests for any output response when no test signals are applied. If the
ECM detects an output response, this DTC sets.
Test Three
The ECM internally turns OFF the knock sensor signal circuits. The ECM generates an internal test pulse and monitors the return signal. If the
return test pulse is less than a calibrated threshold, this DTC sets.
Conditions for Running the DTC
* The ECM is controlling spark.
* The engine coolant temperature is warmer than 60掳C (140掳F).
* DTC P0324 runs continuously once the above conditions are met.
Conditions for Setting the DTC
* The ECM detects an incorrect response to the self tests performed on the internal knock sensor circuitry.
* The condition exists for greater than 1 s or for a cumulative of 10 s.
Action Taken When the DTC Sets
DTCs P0324 is a Type B DTC.
Conditions for Clearing the DTC
DTCs P0324 is a Type B DTC.
Reference Information
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Note: If you can hear an engine knock, repair the engine mechanical condition before proceeding with this diagnostic. Refer to Symptoms - Engine
Mechanical (See: Engine, Cooling and Exhaust/Engine/Testing and Inspection/Symptom Related Diagnostic Procedures/Symptoms - Engine
Mechanical).
1. Observe and record the Freeze Frame/Failure Records for DTC P0324.
瀚慖f DTC P0335, P0336, or P0338 also set, refer to DTC P0335, P0336, or P0338 (w/LLT) ( See: P Code Charts/P0335).
2. Clear the DTCs with a scan tool.
3. Turn OFF the ignition for 30 s.
4. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the
conditions that you observed from the Freeze Frame/Failure Records data.
瀚慖f DTC P0324 failed this ignition, replace the K20 ECM.
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 ECM replacement, setup, and programming
P0325
DTC P0324-P0328, P0330-P0333, P06B6, or P06B7 (w/LF1)
Diagnostic Instructions
