Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptors
DTC B1453 01: Run and Crank/On and Start Power Circuit - Short to BatteryDTC B1453 06: Run and Crank/On and Start Power Circuit - Short to Ground or Open
Diagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Run and Crank/On and Start Power Circuit | B1453 06 | -- | B1453 01 | -- |
Circuit/System Description
The Run and Crank/On and Start Power signal connects the Serial Data Gateway Module (SDGM) along with numerous other modules to the vehicle 12-volt system through a fused relay in the fuse block - underhood. This relay is closed by the Body Control Module (BCM) based on the key being in either the Run or Crank position.
Conditions for Running the DTC
Ignition voltage is between 9-16 volts.
B1453 01
Ignition is in ACC position.
B1453 06
Ignition is in RUN position.
Conditions for Setting the DTC
B1453 01
Run and Crank/On and Start Power Circuit is more than 2.5 volts.
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
Connector End View Reference
Description and Operation
Drive Motor Generator Control Module Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Testing
- 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.
- Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 20 and ground.
- If all circuits test normal, replace the SDGM.
| ⇒ | If the test lamp illuminates, test the signal circuit terminal 20 for a short to voltage. |
| ⇒ | If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for SDGM replacement, setup, and programming
