2010 Cadillac Truck Escalade RWD V8-6.2L Page 1544
The calculated battery voltage measurement is less than 168 V for 4 seconds
OR
Individual hybrid battery voltage measurement is less than 8.4 V for 4 seconds.
P1A4E
The calculated battery voltage measurement is greater than 408 V for 4 seconds
OR
Individual hybrid battery voltage measurement is greater than 20.4 V for 4 seconds.
Action Taken When the DTC Sets
DTCs P1A1F and P1A4E are Type C DTCs.
Conditions for Clearing the DTC
P1A1F
* DTCs P1A1F is a Type C DTC.
* The calculated battery voltage measurement is greater than 260 V.
* Each individual hybrid battery voltage measurement is greater than 13 V.
P1A4E
* DTCs P1A4E is a Type C DTC.
* The calculated battery voltage measurement is less than 390 V.
* Each individual hybrid battery voltage measurement is less than 19.5 V.
Reference Information
Schematic Reference
Hybrid Energy Storage Schematics ()
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)
DTC Type Reference
Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
* EL-48571 High Voltage Battery Pin Out Box
* EL-48900 HEV Safety Kit
Circuit/System Verification
1. Verify that DTC P0B3C, P0B3D, P0B3E, P0B41, P0B42, P0B43, P0B46, P0B47, P0B48, P0B4B, P0B4C, P0B4D, P0B50, P0B51, P0B52,
P0B55, P0B56, P0B57, P0B5A, P0B5B, P0B5C, P0B5F, P0B60, P0B61, P0B64, P0B65, P0B66, P0B69, P0B6A, P0B6B, P0B6E, P0B6F,
P0B70, P0B73, P0B74, P0B75, P0B78, P0B79, P0B7A, P0B7D, P0B7E, P0B7F, P0B82, P0B83, P0B84, P0B87, P0B88, P0B89, P0B8C,
P0B8D, P0B8E, P0B91, P0B92, P0B93, P0B96, P0B97, P0B98, P0B9B, P0B9C, P0B9D, or P0ABB is not set.
瀚慖f any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code
Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).
2. Ignition ON, engine OFF, verify the scan tool Hybrid Battery Pack Calculated Voltage parameter is 230-407 V.
3. Observe the scan tool Hybrid Battery 1-20 parameters. Each reading should be between 10-19 V and all readings should be within 1.5 V of
