P1123

A1: CARRY OUT AN ACCELERATOR PEDAL POSITION SENSOR COMPONENT CHECK

1. Switch the ignition to the OFF position.
2. REMOVE the accelerator pedal.
3. Measure the resistance across pin 10, (YR) and pin 5,(W) with the pedal released and with the pedal at full throttle.

Is the resistance across pin 10 and pin 5 between 420 ohms and 1420 ohms with the pedal released and between 1600 ohms and 3620 ohms with the pedal at full throttle?

Yes
Go to A2

No
INSTALL a new throttle pedal. CLEAR DTC. TEST the system for normal operation.


A2: CARRY OUT AN ACCELERATOR PEDAL POSITION SENSOR COMPONENT CHECK

1. Measure the resistance across pin 10, (YR) and pin 9, (N).

Is the resistance across pin 10 and pin 9 between 1980 ohms and 3700 ohms?

Yes
Go to A3

No
INSTALL a new throttle pedal. CLEAR DTC. TEST the system for normal operation.


A3: CARRY OUT AN ACCELERATOR PEDAL POSITION SENSOR COMPONENT CHECK

1. Measure the resistance across pin 5, (W) and pin 9,(N).

Is the resistance across pin 9 and pin 5 between 1640 ohms and 3680 ohms with the pedal released and between 450 ohms and 1470 ohms with the pedal at full throttle?

Yes
Go to A4

No
INSTALL a new throttle pedal. CLEAR DTC. TEST the system for normal operation.


A4: CHECK THE ACCELERATOR PEDAL POSITION WIRE (YR) FOR OPEN

1. Remove the powertrain control module (PCM).
2. Measure the continuity of the accelerator pedal position sensor between connector CA88 pin 10, (YR) and the powertrain control module electrical connector FH1-23, (YR).

Is the resistance greater than 10,000 ohms?

Yes
INSTALL the throttle pedal. CLEAR DTC. TEST the system for normal operation. REPAIR the wire between the accelerator pedal position sensor harness CA88 pin 10, (YR) and the powertrain control module electrical connector FH1-23, (YR). INSTALL the powertrain control module. CLEAR DTC. TEST the system for normal operation.

No
Goto A5


A5: CHECK THE ACCELERATOR PEDAL POSITION WIRE (YR) FOR SHORT TO GROUND

1. Measure the resistance between the accelerator pedal position wire connector CA88 pin 10, (YR) and ground.

Is the resistance less than 5 ohms?

Yes
INSTALL the throttle pedal. CLEAR DTC. TEST the system for normal operation. REPAIR the wire between the accelerator pedal position sensor harness CA88 pin 10, (YR) and the powertrain control module electrical connector FH1-23, (YR). INSTALL the powertrain control module. CLEAR DTC. TEST the system for normal operation.

No
Go to A6


A6: CHECK THE ACCELERATOR PEDAL POSITION WIRE (W) FOR OPEN

1. Measure the continuity of the accelerator pedal position sensor between connector CA88 pin 5(W) and the powertrain control module electrical connector FH1-15, (W).

Is the resistance greater than 10,000 ohms?

Yes
INSTALL the throttle pedal. CLEAR DTC. TEST the system for normal operation. REPAIR the wire between the accelerator pedal position sensor harness CA88 pin 5, (W) and the powertrain control module electrical connector FH1-15, (W). INSTALL the powertrain control module. CLEAR DTC. TEST the system for normal operation.

No
Go to A7


A7: CHECK THE ACCELERATOR PEDAL POSITION WIRE (W) FOR SHORT TO GROUND

1. Measure the resistance between the accelerator pedal position wire connector CA88 pin 5, (W) and ground.

Is the resistance less than 5 ohms?

Yes
INSTALL the throttle pedal. CLEAR DTC. TEST the system for normal operation. REPAIR the wire between the accelerator pedal position sensor harness CA88 pin 5, (W) and the powertrain control module electrical connector FH1-15, (W). INSTALL the powertrain control module. CLEAR DTC. TEST the system for normal operation.

No
Go to A8


A8: CHECK THE ACCELERATOR PEDAL POSITION WIRE (N) FOR OPEN

1. Measure the continuity of the accelerator pedal position sensor between connector CA88 pin 9, (N) and the powertrain control module electrical connector FH1-05, (N).

Is the resistance greater than 10,000 ohms?

Yes
INSTALL the throttle pedal. CLEAR DTC. TEST the system for normal operation. REPAIR the wire between the accelerator pedal position sensor harness CA88 pin 9, (N) and the powertrain control module electrical connector FH1-05, (N). INSTALL the powertrain control module. CLEAR DTC. TEST the system for normal operation.

No
Go to A9


A9: CHECK THE ACCELERATOR PEDAL POSITION WIRE (N) FOR SHORT TO GROUND

1. Measure the resistance between the accelerator pedal position wire connector CA88 pin 9, (N) and ground.

Is the resistance less than 5 ohms?

Yes
INSTALL the throttle pedal. CLEAR DTC. TEST the system for normal operation. REPAIR the wire between the accelerator pedal position sensor harness CA88 pin 9, (N) and the powertrain control module electrical connector FH1-05, (N). INSTALL the powertrain control module. CLEAR DTC. TEST the system for normal operation.

No
INSTALL a new powertrain control module. TEST the system for normal operation.