2010 Cadillac Truck Escalade RWD V8-6.2L Page 2018
瀚慖f greater than the specified range, test the circuits for a short to voltage. If the circuits test normal, replace the ECM.
9. Test for intermittent or poor connections at the ECM, KS, and in-line connectors where present.
10. If all circuits test normal, replace the ECM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Knock Sensor 1 Replacement (See: Powertrain Management/Computers and Control Systems/Knock Sensor/Service and Repair/Knock
Sensor 1 Replacement)
* Knock Sensor 2 Replacement (See: Powertrain Management/Computers and Control Systems/Knock Sensor/Service and Repair/Knock
Sensor 2 Replacement)
* Engine Control Module Replacement (See: Powertrain Management/Computers and Control Systems/Engine Control Module/Service and
Repair)
* Engine Control Module Programming and Setup (See: Powertrain Management/Computers and Control Systems/Engine Control
Module/Testing and Inspection)
P0330
DTC P0324, P0325, P0326, P0327, P0328, P0330, P0332, or P0333
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 P0324
- Knock Sensor (KS) Module Performance
DTC P0325
- Knock Sensor (KS) Circuit Bank 1
DTC P0326
- Knock Sensor (KS) Performance
DTC P0327
- Knock Sensor (KS) Circuit Low Voltage Bank 1
DTC P0328
- Knock Sensor (KS) Circuit High Voltage Bank 1
DTC P0330
- Knock Sensor (KS) Circuit Bank 2
DTC P0332
- Knock Sensor (KS) Circuit Low Voltage Bank 2
DTC P0333
- Knock Sensor (KS) Circuit High Voltage Bank 2
Diagnostic Fault Information
Circuit/System Description
The knock sensor (KS) system enables the engine control module (ECM) to control the ignition timing for the best possible performance while
protecting the engine from potentially damaging levels of detonation. The ECM monitors 2 separate KS, one on each side of the engine block. Each
KS produces an AC voltage that varies, depending on the vibration levels detected during engine operation. The ECM receives the KS signal
