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 B101E 43: ECU EEPROM Program Error
DTC B101E 4B: Calibration Not Learned

### Circuit/System Description

When the ignition is turned ON, the passenger presence system performs a self test to verify if any critical malfunction exists within the system. During the power-up mode the passenger presence system checks for a valid calibration data set. If no valid calibration set is found the passenger presence system disables the system.

### Conditions for Running the DTC

System voltage is between 9-16 V.

### Conditions for Setting the DTC

The calibration data set in not programmed in the passenger presence system.

### Action Taken When the DTC Sets

Passenger presence system functions are disabled.

### Conditions for Clearing the DTC

• | The condition for setting the DTC is no longer present.

• | The history DTC clears after 100 fault-free ignition cycles.

### Reference Information

#### Schematic Reference

SIR Schematics

#### Connector End View Reference

Component Connector End Views

#### Description and Operation

SIR System Description and Operation

#### Electrical Information Reference

• | Circuit Testing

• | Connector Repairs

• | Wiring Repairs

#### Scan Tool Reference

Control Module References for scan tool information

### Circuit/System Verification

Verify that DTC B101E is not set.

⇒ | If the DTC is set, program the K85 passenger presence system module. If the DTC resets, replace the K85 passenger presences system module.

### Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for passenger presence system replacement, setup, and programming