B2113

B2113-5 VOLT SUPPLY CIRCUIT HIGH





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

- When Monitored:
With the ignition on.

- Set Condition:
The Front Control Module detects the (F891) 5 Volt Supply circuit voltage above 5.0 volts.





1. CHECK FOR ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, read the active DTCs.

Does the scan tool display this DTC as active?

Yes

- Go To 2

No

- If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. A/C PRESSURE TRANSDUCER




1. Turn the ignition off.
2. Disconnect the A/C Pressure Transducer harness connector.
3. Turn the ignition on.
4. Measure the voltage across the (F981) 5 Volt Supply circuit and the (C918) FCM Sensor Return circuit at the A/C Pressure Transducer harness connector.

Does the voltage read 5.0 Volts?

Yes

- Replace the A/C Pressure Transducer.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 3

3. (F891) 5 VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE




1. Turn the ignition off.
2. Disconnect the FCM C1 harness connector.
3. Turn the ignition on.
4. Measure the voltage of the (F891) 5 Volt Supply circuit.

Is the voltage above 5.5 volts?

Yes

- Repair the (F891) 5 Volt Supply circuit for a short to voltage.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 4

4. (F891) 5 VOLT SUPPLY CIRCUIT OPEN




1. Turn the ignition off.
2. Measure the resistance of the (F981) 5 Volt Supply circuit.

Is the resistance above 10.0 Ohms?

Yes

- Repair the (F891) 5 Volt Supply circuit for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 5

5. (F891) 5 VOLT SUPPLY CIRCUIT SHORTED TO THE (C18) A/C PRESSURE SIGNAL CIRCUIT




1. Measure the resistance between the (F981) 5 Volt Supply circuit and the (C18) A/C Pressure Signal circuit.

Is the resistance below 10.0 Ohms?

Yes

- Repair the (F891) 5 Volt Supply circuit for a short to the (C18) A/C Pressure Signal circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 6

6. (C918) FCM SENSOR RETURN CIRCUIT OPEN




1. Disconnect the IPM C1 harness connector.
2. Measure the resistance of the (C918) FCM Sensor Return circuit.

Is the resistance above 10.0 Ohms?

Yes

- Repair the (C918) FCM Sensor Return circuit for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 7

7. INTEGRATED POWER MODULE (IPM) / FRONT CONTROL MODULE (FCM)
1. Reconnect the IPM C1 harness connector.
2. Remove the FCM from the IPM.
3. Measure the resistance of the (C918) FCM Sensor Return circuit between the A/C Pressure Transducer harness connector and the IPM Terminal 35.

Is the resistance above 10.0 Ohms?

Yes

- Replace the IPM.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Replace the FCM.
- Perform the BODY VERIFICATION TEST. Body Verification Test.