Circuit Description
The dash integration module (DIM) has an internal voltage sensor with a dedicated circuit that checks the battery positive voltage and battery negative circuit voltage to determine if it is below 15.5 volts.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC B1328 Device Power Circuit High
Conditions for Running the DTC
This DTC shall run only if the DIM has power, ground and the ignition is not in START mode. This DTC shall execute regardless of the battery voltage, except when the DTC B1390 is set current.
Conditions for Setting the DTC
This DTC shall be set as current when the voltage raises above 16.5 volts for 1200 milliseconds.
Action Taken When the DTC Sets
A message shall be sent out on the class 2 lines to notify the SIR of high battery voltage.
Conditions for Clearing the MIL/DTC
In order to clear the DTC from a current status the voltage shall be less than 15.5 volts for 1200 milliseconds.
Test Description
The number below refers to the step number on the diagnostic table.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Schematic Reference: Starting and Charging Schematics | ||||
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | |
2 |
Does the scan tool indicate the battery voltage is less than the specified value? | 15.5 V | Go to Step 4 | Go to Step 3 |
Are the voltages within the specified value? | 1 V | Go to Charging System Test | Go to Step 4 | |
4 | Inspect for poor connections at the harness connector of the DIM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | -- | Go to Step 6 | Go to Step 5 |
5 | Replace the DIM. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | -- | Go to Step 6 | -- |
6 |
Does the DTC reset? | -- | Go to Step 2 | System OK |
