B1453 06
Run and Crank/On and Start Power Circuit is less than 2.5 volts.
Action Taken When the DTC Sets
DTC B1453 is a Type C DTC.
Conditions for Clearing the DTC
DTC B1453 is a Type C DTC.
B1453 01
Run and Crank/On and Start Power Circuit is less than 2.5 volts.
B1453 06
Run and Crank/On and Start Power Circuit is more than 2.5 volts.
Diagnostic Aids
Many controllers such as the power inverter module (PIM), transmission control module (TCM), and inflatable restraint sensing and diagnostic
module (SDM) will set a DTC for a problem with the Run and Crank/On and Start Power Voltage circuit. Confirm that they do not have DTCs
before only investigating the SDGM.
Reference Information
Schematic Reference
Hybrid Controls Schematics ()
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Drive Motor Generator Control Module Description and Operation ()
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)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the SDGM harness connector X2 at the SDGM, verify that a test lamp does not illuminate between the ignition
circuit terminal 20 and ground.
锟斤拷 If the test lamp illuminates, test the signal circuit terminal 20 for a short to voltage.
2. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 20 and ground.
锟斤拷 If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
3. If all circuits test normal, replace the SDGM.
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 SDGM replacement, setup, and programming
