647
Throttle Position Sensor
Throttle position sensor 1 short circuit
to battery positive or open circuit
View and note diagnostic software
freeze frame data if available.
View and note diagnostic software
sensor data.
Make sure sensor connector is secure
Disconnect ECM and proceed to
pinpoint test 1:
Throttle position sensor 1 signal out
of range
Throttle position sensor 1 short circuit
to ground
Throttle position sensor 2 short circuit
to battery positive or open circuit
Throttle position sensor 2 signal out
of range
Throttle position sensor 2 short circuit
to ground
Throttle position sensor 1 correlation
error with throttle position sensor 2
Check cable and terminal integrity:
All Fault Codes
- Engine ECM pin A20
- Engine ECM pin A32
P0220, PO221, PO222, P2135
- Engine ECM pin A38
- Engine ECM pin A26
Disconnect sensor and
proceed to test 2
Rectify fault, proceed to
test 5
Check cable for short circuit:
P0220, PO221, PO222, P2135
- Engine ECM pin A26 to ground
- Engine ECM pin A38 to ground
Locate and rectify wiring
fault, proceed to test 5