GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 1998 🢒 Seville 🢒 DTC 🢒 DTC B1328 Battery/Source Voltage High

Object Number: 260684 Size: MF
Body Control Module Components
Body Control System Schematics
Handling ESD Sensitive Parts Notice
Ground Distribution Schematics
Power and Grounding Connector End Views
Power Distribution Schematics
Power Distribution Schematics
Power and Grounding Connector End Views
Power Distribution Schematics
Power Distribution Schematics

Circuit Description

Battery Positive Voltage (B+) is supplied to the RIM at connector C1, terminal A1, CKT 540 (ORN). The RIM monitors this voltage to determine if it is within a valid operating range.

Conditions for Setting the DTC

The Battery Positive Voltage (B+) level rises above 15.5 volts for more than approximately 1.2 seconds.

Action Taken When the DTC Sets
    • DTC B1328 is stored in the module memory.
    • The module will not respond to inputs when the voltage is greater than 16 volts
    • No driver warning message will be displayed for this DTC.
    • Other module DTCs will not set while DTC B1328 is current.

Conditions for Clearing the DTC
    • A current DTC clears (status changes from current to history) if the Battery Positive Voltage (B+) level falls below 15 volts for approximately 1.2 seconds.
    • The DTC may be cleared using a scan tool.
    • The DTC may be cleared using the On-Board clearing DTCs feature. Refer to Diagnostic Trouble Code (DTC) Clearing in HVAC Systems with A/C - Automatic.

Diagnostic Aids

This DTC may set when the vehicle is placed on a battery charger, on fast charge, for a long period of time.

Test Description

The numbers below refer to the step numbers on the diagnostic table:

  1. Perform Body Control Module Diagnostic System Check before continuing with the diagnosis of this DTC.

    2.

  2. Checks if DTC is correctly set.

    3.

  3. Checks for intermittent charging system problems.

    4.

  4. Checks that DTC was not erroneously set.

    5.

  5. Determines whether the malfunction is in the charging system or the module which set the DTC.

    6.

  6. Clear all DTCs after the repair procedure is complete.

DTC B1328 -- Source/Battery Voltage High

Step

Action

Value(s)

Yes

No

1

Was the Body Control Module Diagnostic System Check performed?

--

Go to Step 2

Go to Diagnostic System Check - Body Control System

2

  1. Turn ON the ignition switch.
  2. Clear DTCs.
  3. Turn OFF the igniton switch.
  4. Turn ON the ignition switch, engine running.
  5. Check for DTCs.

Is the DTC still present?

--

Go to Step 4

Go to Step 3

3

Did more than one module have the DTC prior to clearing?

--

Go to Charging System in Engine Electrical

Go to Diagnostic System Check - Body Control System

4

  1. Connect a scan tool to the Data Link Connector (DLC).
  2. Select DATA from the DATA LIST of the module which set the DTC.

Is the Battery Positive Voltage (B+) less than the specified value?

15.5 V

Go to Step 6

Go to Step 5

5

With the RIM connected, measure the voltage between the RIM C1 terminal A1 (ORN) and ground.

Is the measured voltage less than the specified value?

15.5 V

Go to Step 6

Go to Charging System in Engine Electrical

6

Replace the Rear Integration Module (RIM).

Is the repair complete?

--

Go to Step 7

--

7

  1. Reconnect or install any connectors or components that were disconnected or removed.
  2. Clear any DTCs. Refer to Clearing DTCs.

Are all DTCs cleared?

--

Go to Diagnostic System Check - Body Control System

--