For 1990-2009 cars

### 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 Descriptors

DTC B1000 00: Electronic Control Unit (ECU) Performance No Additional Information Available
DTC B1000 04: Side Object Detection Performance - RAM Failure
DTC B1000 08: Electronic Control Unit (ECU) Performance Signal Invalid
DTC B1000 12: Electronic Control Unit (ECU) Performance Below Minimum Threshold
DTC B1000 31: Electronic Control Unit (ECU) General Checksum Problem
DTC B1000 33: Electronic Control Unit (ECU) Performance Special Memory Failure
DTC B1000 34: Electronic Control Unit (ECU) Performance RAM Integrity
DTC B1000 35: Electronic Control Unit (ECU) Performance ROM Integrity
DTC B1000 36: Electronic Control Unit (ECU) Performance EEPROM Integrity
DTC B1000 37: Electronic Control Unit (ECU) Performance Watchdog / Safety Failure
DTC B1000 38: Electronic Control Unit (ECU) Performance Supervision Software Failure
DTC B1000 39: Electronic Control Unit (ECU) Performance Internal Electronic Failure
DTC B1000 43: Electronic Control Unit (ECU) Performance EEPROM Error
DTC B1000 46: Side Object Detection Performance - Invalid Configuration
DTC B1000 56: Electronic Control Unit (ECU) Performance Allowable Number of Transitions/ Events Exceeded
DTC B1000 57: Electronic Control Unit (ECU) Performance
DTC B1000 73: Electronic Control Unit (ECU) Performance Parity Error
DTC B1000 0F: Electronic Control Unit (ECU) Performance Erratic
DTC B1000 2B: Electronic Control Unit (ECU) Performance Missing Reference
DTC B1000 2C: Electronic Control Unit Performance Reserved
DTC B1000 3B: Electronic Control Unit (ECU) Performance Internal Self Test Failed
DTC B1000 3C: Electronic Control Unit (ECU) Performance Internal Communications Failure
DTC B1000 4A: Side Object Detection Performance - PROM Checksum Error
DTC B1000 F0: Side Object Detection RF Transmit Chain Failed
DTC B1000 F1: Side Object Detection RF Receive Chain Failed
DTC B1000 F2: Side Object Detection Frequency Calibration Failure
DTC B1000 F3: Side Object Detection Inter-Processor Communication Failed

### Circuit/System Description

The internal fault detection is handled inside the control module. No external circuits are involved.

### Conditions for Running the DTC

The module runs the program to detect an internal fault when power up is commanded. The only requirements are voltage and ground. This program runs even if the voltage is out of the valid operating range.

### Conditions for Setting the DTC

The module has detected an internal malfunction.

### Action Taken When the DTC Sets

The module refuses all additional inputs.

### Conditions for Clearing the DTC

• | A current DTC clears when the malfunction is no longer present.

• | A history DTC clears when the module ignition cycle counter reaches the reset threshold of 50, without a repeat of the malfunction.

### Diagnostic Aids

• | This DTC may be stored as a history DTC without affecting the operation of the module.

• | If stored only as a history DTC and not retrieved as a current DTC, do not replace the module.

• | If this DTC is retrieved as both a current and history DTC, replace the module that set the DTC.

### Circuit/System Verification

If this DTC is retrieved as a current DTC, replace the module that set the DTC.

### Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for module replacement, setup, and programming