B1325
DTC B1325
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.
DTC Descriptors
DTC B1325 03
- Device Power 1 Circuit Voltage Below Threshold
DTC B1325 07
- Device Power 1 Circuit Voltage Above Threshold
DTC B1325 4A
- Device Power 1 Circuit Checksum Error
Diagnostic Fault Information
Circuit/System Description
The following control modules monitor the system voltage through the battery positive (B+) voltage circuits:
* Instrument panel cluster (IPC)
* Passenger presence system (PPS)
If any of the control modules listed detect that the battery voltage is out of range, it will set DTC B1325.
Conditions for Running the DTC
* The voltages supplied to the control modules are in the range of 7-26 V.
* The ignition is ON.
Conditions for Setting the DTC
B1325 03
The control module detects a system voltage below 9 V for 5 seconds.
B1325 07
The control module detects a system voltage above 18 V for 5 seconds.
B1325 4A
The instrument panel cluster (IPC) failed the power on checksum test, either due to low voltage or corrupted memory.
Conditions for Running the DTC
* The voltages supplied to the control modules are in the range of 7-26 V.
* The ignition is ON.
Conditions for Clearing the DTC
The DTC passes when the malfunction is no longer present.
Diagnostic Aids
* A high or low voltage value in multiple modules indicates a concern in the charging system.
* Overcharging with a battery charger or jump starting can cause this DTC to set.
Reference Information
Schematic Reference
* Instrument Cluster Schematics Instrument Cluster Schematics
* SIR Schematics [1][2]Air Bag Systems
Connector End View Reference
Component Connector End Views 1-2 Shift Solenoid (SS) Valve (M30)
Description and Operation
Charging System Description and Operation Description and Operation
Electrical Information Reference
* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs
Scan Tool Reference
Control Module References Control Module References for scan tool information
Circuit/System Testing
1. Engine running, accessories OFF, measure and record the battery voltage at the battery terminals. The voltage should be between 12.6 and 15.0 V.
• If the battery voltage is not within the specified range, refer to Charging System Test Testing and Inspection.
2. Ignition OFF, disconnect the harness connectors of the appropriate control module.
3. Ignition OFF and scan tool disconnected, open and close the driver door, and wait 1 minute.
4. Test for less than 5.0 ohms between the ground circuit and ground.
* Terminal 7 (IPC)
* Terminal D (PPS)
• If greater than the specified range, test the ground circuit for an open/high resistance.
5. Ignition ON, verify a test lamp illuminates between the B+ circuit and ground.
* Terminals 19-20 (IPC)
* Terminal A (PPS)
• If the test lamp does not illuminate , test the B+ circuit for a short to ground or an open/high resistance.
6. If all circuits test normal, replace the appropriate control module.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.
Control Module References Control Module References for the appropriate control module replacement, setup, and programming