DTC B1009 RHD
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 Descriptor
DTC B1009 36: EEPROM FailureCircuit/System Description
The electrically erasable programmable read-only memory (EEPROM) check sum error detection is handled inside the Audio/Video Interface Module. No external circuits are involved.
Conditions for Running DTC
The Audio/Video Interface Module runs the program to detect an EEPROM checksum error after each wake-up. The only requirements are battery positive voltage and ground. This program runs even if the voltage is out of the valid operating range.
Conditions for Setting the DTCs
The Audio/Video Interface Module retains an inverse copy of the digital value stored in certain blocks of memory in the EEPROM. The Audio/Video Interface Module then reads the information from those certain blocks and adds the stored inverse value to the current value. If they do not equal 0, the module sets the DTC.
Action Taken When the DTC Sets
The Audio/Video Interface Module reverts to base operation values programmed for those blocks of data that have failed the check sum test. The blocks of data that have not failed the check sum test are not affected.
Conditions for Clearing the DTC
| • | The condition for setting the DTC is no longer present. |
| • | The history DTC will clear after 50 fault-free ignition cycles. |
| • | The DTC can be cleared using a scan tool. |
Diagnostic Aids
This DTC may be stored as a history DTC without affecting the operation of the Audio/Video Interface Module. If stored only as a history DTC and not retrieved as a current DTC, do not replace the Audio/Video Interface Module.
Reference Information
Schematic Reference
Radio/Navigation System Schematics
Connector End View Reference
Description and Operation
Radio/Audio System Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Testing
- Verify DTC B1009 36 is not set.
| ⇒ | If the DTC is set, replace the Audio/Video Interface Module. |
Repair Instructions
Perform the Diagnostic Repair Verification.
