GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 1998 🢒 Seville 🢒 DTC 🢒 DTC B1007 EEPROM Write Error

Circuit Description

The module performs internal tests on the EEPROM each time the module performs a write function to a memory address in the EEPROM. The module reads back the data that has been written and compares it to the data. If the data does not match after 3 consecutive write and verify attempts, the module will indicate a write malfunction is current.

Conditions for Setting the DTC
    • The data read back after a write does not match the data being written 3 consecutive times.
    • The module detects an internal write malfunction.
    • The condition must occur when data is being written.

Action Taken When the DTC Sets
    • Stores a DTC B1007 in the module memory.
    • No driver warning message will be displayed for this DTC.
    • The module will store the value being written in another memory address in the EEPROM.

Conditions for Clearing the DTC
    • This DTC requires a successful write in order to change from current to history.
    • The module no longer detects an internal write malfunction.
    • A history DTC will clear after 50 consecutive ignition cycles if the condition for the malfunction is no longer present.
    • Use the On-Boards clearing DTCs feature. Refer to Diagnostic Trouble Code (DTC) Clearing in HVAC Systems with A/C - Automatic.
    • Use a scan tool.

Diagnostic Aids

Since the EEPROM cannot be removed from the module and DTC B1007 is an internal module malfunction, the module may need to be replaced. Refer to diagnostic table.

Test Description

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

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

    2.

  2. Clear all DTCs and cycle ignition to check that the DTC did not falsely set.

    3.

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

DTC B1007 -- EEPROM Write Error

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 any DTCs. Refer to Clearing DTCs.
  3. Turn OFF the ignition switch.
  4. Turn ON the ignition switch.

Is the DTC still present?

--

Go to Step 3

System OK

3

Replace the Rear Integration Module (RIM); refer to Rear Integration Module Replacement.

Is the module replacement complete?

--

Go to Step 4

--

4

  1. Turn OFF the ignition switch.
  2. Reconnect or install any connectors or components that were disconnected or removed.
  3. Turn ON the ignition switch.
  4. Clear any DTCs. Refer to Clearing DTCs.

Are all DTCs cleared?

--

Go to Diagnostic System Check - Body Control System

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