B2103-15

B2103-15-IGNITION RUN/START 1 CONTROL - CIRCUIT SHORT TO BATTERY OR OPEN





For a complete wiring diagram, refer to the Wiring Information.

Theory of Operation

The Body Control Module (BCM) receives the network communication message from the Radio Frequency (RF) Hub indicating run/start operation is requested. The BCM provides a voltage output through the run/start relay control circuit, which connects to the coil side of the Run/Start Relay.

- When Monitored:
With the Ignition Run/Start Relay off.

- Set Condition:
When the Body Control Module (BCM) detects a high condition on the (K617) Run/Start Relay Control circuit.





1. INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, clear all DTCs.
3. Turn the ignition off.
4. Turn the ignition on to ACC.
5. With the scan tool, read DTCs.

Does the scan tool display DTC: B2103-15-IGNITION RUN/START 1 CONTROL - CIRCUIT SHORT TO BATTERY OR OPEN?

Yes

- Go To 2

No

- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. CHECK THE IGNITION RUN/START RELAY FOR CORRECT OPERATION
1. Turn the ignition off.
2. Remove the Ignition Run/Start Relay and substitute it with a known good relay.
3. Turn the ignition on to ACC.
4. With the scan tool, read DTCs.

Does the scan tool display DTC: B2103-15-IGNITION RUN/START 1 CONTROL - CIRCUIT SHORT TO BATTERY OR OPEN?

Yes

- Go To 3

No

- Replace the Ignition Run/Start Relay.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

3. CHECK THE (K617) RUN/START RELAY CONTROL CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off.
2. Remove the Run/Start Relay.
3. Using a 12-volt test light connected to ground, check the (K617) Run/Start Relay Control circuit.

Does the test light illuminate brightly?

Yes

- Repair the short to voltage in the (K617) Run/Start Relay Control circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 4

4. CHECK THE (K617) RUN/START RELAY CONTROL CIRCUIT FOR AN OPEN
1. Disconnect the BCM A harness connector.
2. Measure the resistance of the (K617) Run/Start Relay Control circuit between the Front Power Distribution Center (PDC) and the BCM A harness connector.

Is the resistance below 5.0 Ohms?

Yes

- Replace the Body Control Module (BCM). Body Control Module - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Repair the open in the (K617) Run/Start Relay Control circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.