POSSIBLE CAUSE
A. SENSOR GROUND OPEN CIRCUIT
B. SENSOR SIGNAL SHORTED TO SENSOR SUPPLY
C. SENSOR SIGNAL SHORTED TO BATTERY SOURCE
D. SENSOR FAILURE
E. FUNCTIONAL FAILURE IN CONTROLLER
NOTE
Please refer to the end of this procedure for supporting diagrams.
COMPONENT OPERATIONAL CHECK
PROCEDURE OR ACTION:
1. Turn power to OFF for no less than 30 seconds, and then to ON to clear displayed DTC.
Does reported DTC reoccur?
YES: Go to Step 2.
NO: Problem not verified. Resume operation.
2. Conduct a quick visual inspection of all connectors/wiring associated with the displayed fault code.
Are any faults detected/observed?
YES: Repair/replace connector or wiring associated with faults found. Refer to the appropriate Electrical
System SRM.
NO: Go to Cause A.
CAUSE A - SENSOR GROUND OPEN CIRCUIT
PROCEDURE OR ACTION:
1. Ensure truck power is OFF.
2. Disconnect indicated sensor connector.
3. Turn truck power ON.
4. Change DMM to volts scale.
5. At sensor harness connector, measure voltage across sensor supply pin (+) and sensor ground pin (-).
Is voltage approximately 5 Vdc?
YES: Sensor supply circuit is OK. Go to Cause B.
NO: Go to Step 6.
6. Move negative (-) meter probe to a clean frame ground.
Is voltage approximately 5 Vdc?
YES: Sensor ground has open circuit. Locate and repair/replace open wire/connection. Refer to the appropriate
Wiring Harness Repair SRM.
Diagnostic Trouble Codes Electrical System
Check the Service Manual section in Hypass Online for possible updates and check pertinent Grams
9030-20-108 Confidential/Proprietary - Do Not Copy or Duplicate
Throttle Position OORH (Cont)