2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2211
Reference Information
Schematic Reference
* Instrument Cluster Schematics (See: Diagrams/Electrical Diagrams/Instrument Panel, Gauges and Warning Indicators/System
Diagram/Instrument Cluster Schematics)
* Engine Controls Schematics (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
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
1. Ignition ON, command the MIL ON and OFF with a scan tool. The MIL should turn ON and OFF as commanded.
2. Engine idling, command the MIL ON and OFF with a scan tool while observing the following control circuit status parameters:
* MIL Ckt Short Gnd Test Status
* MIL Ckt Open Test Status
* MIL Ckt Short Volts Test Status
Each parameter should display OK or Not Run.
3. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed
from the Freeze Frame/Failure Records data.
Circuit/System Testing
1. If any other instrument panel cluster (IPC) indicators or gauges are inoperative, refer to Instrument Cluster Gauges Inoperative (See:
Instrument Panel, Gauges and Warning Indicators/Testing and Inspection/Instrument Cluster Gauges Inoperative).
2. Ignition OFF, disconnect ECM X1 harness connector. Ignition ON, the MIL should not illuminate.
瀚慖f the MIL is illuminated, test the MIL control circuit terminal X1-68 for a short to ground. If the circuit tests normal, replace the IPC.
3. Ignition ON, connect a 3 A fused jumper wire between the MIL control circuit terminal X1-68 and ground. The MIL should illuminate.
瀚慖f the MIL does not illuminate, test the MIL control circuit for a short to voltage, or an open/high resistance. If the circuit tests normal,
replace the IPC/bulb.
4. If all circuits/connections test normal, replace the ECM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Instrument Cluster Replacement (Except Cadillac) (See: Instrument Panel, Gauges and Warning Indicators/Instrument Cluster /
Carrier/Service and Repair/Instrument Cluster Replacement (Except Cadillac))Instrument Cluster Replacement (Cadillac) (See: Instrument
Panel, Gauges and Warning Indicators/Instrument Cluster / Carrier/Service and Repair/Instrument Cluster Replacement (Cadillac))
* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming
