Diagnostic Routine B

Diagnostic Routine B

Diagnostic Overview

B10D9:11, B10D9:12, B10D9:31 Or B10D9:87

Refer to Wiring Diagram Set 112 for schematic and connector information Electrical Diagrams.

Normal Operations and Fault Conditions

The RFA (Remote Function Actuator) module uses the backup transceiver to operate the PATS (Passive Anti-Theft System) in the event of a failure of any passive start antenna, a discharged battery in the IA (Intelligent Access) key, or a communication concern with the TPM (Tire Pressure Monitor) module. The backup transceiver is also used for IA (Intelligent Access) key programming.

The backup transceiver receives voltage and ground directly from the RFA (Remote Function Actuator) module. The RFA (Remote Function Actuator) module controls the backup transceiver through the dedicated clock and data circuits.

DTC Fault Trigger Conditions






Pinpoint Test

1. CHECK THE BACKUP TRANSCEIVER CIRCUITS FOR A SHORT TO VOLTAGE

1. Ignition OFF.

2. Disconnect: RFA (Remote Function Actuator) Module C2153D.

3. Disconnect: Backup Transceiver.

4. Ignition ON.

5. Measure:





Is any voltage present?








2. CHECK THE BACKUP TRANSCEIVER CIRCUITS FOR A SHORT TO GROUND

1. Ignition OFF.

2. Measure:





Are the resistances greater than 10,000 ohms?








3. CHECK THE BACKUP TRANSCEIVER CIRCUITS FOR AN OPEN

1. Measure:





Are the resistances less than 3 ohms?








4. CHECK THE BACKUP TRANSCEIVER

1. Install a new backup transceiver. REFER to Backup Transceiver .

2. Connect: RFA (Remote Function Actuator) Module C2153D.

3. Clear the RFA (Remote Function Actuator) module DTCs (Diagnostic Trouble Codes).

4. Using a scan tool, perform the RFA (Remote Function Actuator) module self-test.

Is DTC (Diagnostic Trouble Code) B10D9:11, B10D9:12, B10D9:31 or B10D9:87 present?








5. CHECK FOR CORRECT RFA (Remote Function Actuator) MODULE OPERATION

1. Disconnect and inspect all the RFA (Remote Function Actuator) module connectors.

2. Repair:

- corrosion (replace connector or terminals - clean module pins)
- damaged or bent pins - replace terminals/pins
- pushed-out pins - replace pins as necessary

3. Connect all the RFA (Remote Function Actuator) module connectors. Make sure they seat and latch correctly.

4. Operate the system and verify the concern is still present.

Is the concern still present?