WATER IN FUEL SENSOR FAULTED HIGH (BCM)
For a complete wiring diagram Refer to Section 8W.
Diagnostic Test
- When Monitored:
With the Ignition on.
- Set Condition:
The BCM detects a High condition on the Water In Fuel Sensor Signal Circuit.
| Possible Causes |
| (K303) WATER IN FUEL SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE |
| (K303) WATER IN FUEL SENSOR SIGNAL CIRCUIT OPEN |
| (K300) SENSOR GROUND CIRCUIT OPEN |
| BCM |
| WATER IN FUEL SENSOR |
Diagnostic Test
1.WATER IN FUEL SENSOR
NOTE: Check connectors - Clean/repair as necessary.
Does the scan tool display: WATER IN FUEL SENSOR FAULTED HIGH?
Yes
- Replace the Water In Fuel Sensor.
- Perform BODY VERIFICATION TEST VER - 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)
No
- Go To 2
2.(K303) WATER IN FUEL SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
Is the voltage above 5.3 volts?
Yes
- Repair the short to voltage in the (K303) Water In Fuel Sensor Signal circuit.
- Perform BODY VERIFICATION TEST VER - 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)
No
- Go To3
3.(K303) WATER IN FUEL SENSOR SIGNAL CIRCUIT OPEN
Is the resistance below 5.0 ohms?
Yes
- Go To4
No
- Repair the open in the (K303) Water In Fuel Sensor Signal circuit.
- Perform BODY VERIFICATION TEST VER - 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)
4.(K300) SENSOR GROUND CIRCUIT OPEN
Is the resistance below 5.0 ohms?
Yes
- Go To5
No
- Repair the open in the (K300) Sensor ground circuit.
- Perform BODY VERIFICATION TEST VER - 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)
5.BCM
NOTE: Before continuing, check the BCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.
If there are no possible causes remaining, view repair.
Repair
- Replace and program the Powertrain Control Module per Service Information.
- Perform BODY VERIFICATION TEST VER - 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)