Pinpoint Test P: DTC B125D:11 Or DTC B125D:15

Anti-Theft - With Intelligent Access (IA)

Pinpoint Test P: DTC B125D:11 Or DTC B125D:15

Refer to Wiring Diagram Set 117, Remote Keyless Entry and Alarm for schematic and connector information. Diagrams By Number

Normal Operation

The start/stop switch is hardwired to the Remote Function Actuator (RFA) module and is used to either start the vehicle or switch the ignition modes. The start/stop switch has a run LED that is illuminated when ignition is switched out of the OFF mode, or the engine is started. The LED flashes as a confirmation when the Intelligent Access (IA) key programming mode is entered. The start/stop switch run LED receives voltage and ground from the RFA (Remote Function Actuator) module.

- DTC B125D:11 (Ignition Run LED Circuit: Short To Ground)- a continuous memory and on-demand DTC that sets when the run LED output circuit from the RFA (Remote Function Actuator) module is shorted to ground.

- DTC B125D:15 (Ignition Run LED Circuit: Short To Battery or Open)- an on-demand DTC that sets when the run LED output circuit from the RFA (Remote Function Actuator) module is shorted to battery or is open.

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors

- Start/stop switch

- RFA (Remote Function Actuator) module

PINPOINT TEST P : DTC B125D:11 OR DTC B125D:15

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

P1 CHECK THE START/STOP SWITCH PIDs

- Enter the following diagnostic mode on the scan tool: RFA (Remote Function Actuator) Module DataLogger.

- Monitor RFA (Remote Function Actuator) module PIDs (Crk_Fact_B1 and Crk_Fact_B2) while pressing the start/stop switch.

Do both PIDs read YES when the switch is pressed?

Yes
GO to P2.

No
REFER to Steering Column to continue diagnosis of the start/stop switch.

P2 CHECK THE START/STOP SWITCH RUN LED

- Ignition OFF.

- Disconnect: Start/Stop Switch C2195.

- Check the start/stop run LED between the start/stop switch C2195 pin 2, component side and the start/stop switch C2195 pin 1, component side.





Does the run LED pass the diode check?

Yes
GO to P3.

No
INSTALL a new start/stop switch. CLEAR the DTCs. REPEAT the self-test.

P3 CHECK THE START/STOP RUN LED OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE

- Connect: Start/Stop Switch C2195.

- Ignition ON.

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

Does the start/stop switch run LED continue to remain illuminated?

Yes
REPAIR circuit CPK36 (VT/BN) for a short to voltage. CLEAR the DTCs. REPEAT the self-test.

No
GO to P4.

P4 CHECK THE START/STOP RUN LED OUTPUT CIRCUIT FOR AN OPEN OR SHORT TO GROUND

- Ignition OFF.

- Disconnect: Start/Stop Switch C2195.

- Measure the resistance between the start/stop switch C2195-2, circuit CPK36 (VT/BN), harness side and the RFA (Remote Function Actuator) module C2153D-8, circuit CPK36 (VT/BN), harness side; and between the start/stop switch C2195-2, circuit CPK36 (VT/BN), harness side and ground.





Is the resistance less than 5 ohms between the start/stop switch and the RFA (Remote Function Actuator) module; and greater than 10,000 ohms between the start/stop switch and ground?

Yes
GO to P5.

No
REPAIR the circuit for an open or short to ground. CLEAR the DTCs. REPEAT the self-test.

P5 CHECK FOR CORRECT RFA (Remote Function Actuator) MODULE OPERATION

- Disconnect all the RFA (Remote Function Actuator) module connectors.

- Check for:
- corrosion

- damaged pins

- pushed-out pins


- Connect all the RFA (Remote Function Actuator) module connectors and make sure they seat correctly.

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

Is the concern still present?

Yes
INSTALL a new RFA (Remote Function Actuator) module. TEST the system for normal operation.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.