Accelerator Pedal Module -GX2-, Checking
General Description
The Accelerator Pedal Position Sensor -G79- and Accelerator Pedal Position Sensor 2 -G185- are combined in one component and integrated into the Accelerator Pedal Module - GX2-. They are used to detect the position of the accelerator pedal throughout the entire adjustment range. The Engine Control Module - J623- detects the driver's request from these signals and uses them to calculate the injection quantity and EPC Throttle valve operation.
The Accelerator Pedal Module - GX2- contains the following components:
- Accelerator Pedal Position Sensor -G79-
- Accelerator Pedal Position Sensor 2 -G185-
The Accelerator Pedal Module - GX2- components can not be serviced separately, and must be serviced as a unit.
Special Tools And Workshop Equipment Required
Test Requirements
- Fuses OK.
- Battery voltage OK.
- Switch OFF All electrical and electronic accessories.
- Vehicles with Auto. Transmission, ensure Selector Lever position is in "P".
- Vehicles with Manual Transmission, ensure Shifter Lever position is in "N" with Parking Brake applied.
- Observe all safety precautions:
.
- View clean working conditions:
.
Test Procedure
| Step |
Procedure |
Result / Action to Take |
| 1 |
- PERFORM: Preliminary Check to verify the customers complaint. Refer to
.
-- Was Complaint verified? |
-- YES:
-- NO:
- GATHER more information from customer about the complaint.
|
| 2 |
- CONNECT: Scan Tool.
- IGNITION: ON.
- CHECK: Throttle valve position closed:
- SPECIFIED VALUE: 3 - 25%.
- DEPRESS: Accelerator pedal slowly to WOT while observing the percentage display. The percentage display must increase uniformly.
- CHECK: Throttle valve position at WOT:
- SPECIFIED VALUE: 84 - 99%.
- IGNITION: OFF.
-- Was Value obtained? |
-- YES:
- Condition may be intermittent.
- PERFORM: Visual Inspection of wiring and component.
- CHECK: Wiring for open, high resistance, short or harness connector for damage, corrosion, loose or broken terminals.
- REPAIR: Faulty wiring or connector.
- GO TO: Step 6 Accelerator Pedal Module -GX2-, CHECKING - 6 .
-- NO:
|
| 3 |
- DISCONNECT: Accelerator Pedal Module - GX2- harness connector.
- IGNITION: ON.
- CHECK: Accelerator Pedal Module - GX2- harness connector terminals 2 to 3 and 1 to 5 for voltage.
- SPECIFIED VALUE: About 5.0 V.
- IGNITION: OFF.
-- Were Values obtained? |
-- YES:
-- NO:
|
| 4 |
- REMOVE: Engine Control Module - J623-. Refer to appropriate service information.
- CHECK: Accelerator Pedal Module - GX2- harness connector terminal 4 to the Engine Control Module - J623- harness connector T91 / 52 for resistance.
- CHECK: Accelerator Pedal Module - GX2- harness connector terminal 6 to the Engine Control Module - J623- harness connector T91 / 69 for resistance.
- SPECIFIED VALUE: 0.5 Ω (± 0.3 Ω).
-- Were Values obtained? |
-- YES:
-- NO:
- PERFORM: Visual Inspection of wiring and component.
- CHECK: Wiring for open, high resistance, short or harness connector for damage, corrosion, loose or broken terminals.
- REPAIR: Faulty wiring or connector.
- GO TO: Step 6 Accelerator Pedal Module -GX2-, CHECKING - 6 .
|
| 5 |
- REMOVE: Engine Control Module - J623-. Refer to appropriate service information.
- CHECK: Accelerator Pedal Module - GX2- harness connector terminal 1 to the Engine Control Module - J623- harness connector T91 / 16 for resistance.
- CHECK: Accelerator Pedal Module - GX2- harness connector terminal 2 to the Engine Control Module - J623- harness connector T91 / 33 for resistance.
- CHECK: Accelerator Pedal Module - GX2- harness connector terminal 3 to the Engine Control Module - J623- harness connector T91 / 34 for resistance.
- CHECK: Accelerator Pedal Module - GX2- harness connector terminal 5 to the Engine Control Module - J623- harness connector T91 / 51 for resistance.
- SPECIFIED VALUE: 0.5 Ω (± 0.3 Ω).
-- Were Values obtained? |
-- YES:
-- NO:
- PERFORM: Visual Inspection of wiring and component.
- CHECK: Wiring for open, high resistance, short or harness connector for damage, corrosion, loose or broken terminals.
- REPAIR: Faulty wiring or connector.
- GO TO: Step 6 Accelerator Pedal Module -GX2-, CHECKING - 6 .
|
| 6 |
- Final Procedure
- Perform a road test to verify repair.
-- Does the original DTC return? |
-- YES:
- CHECK: Engine Control Module -J623- harness connector for any damaged, pushed-out pins.
- REPAIR: As necessary.
- If all electrical connections are OK:
- REPLACE: Engine Control Module -J623-. Refer to appropriate service information.
- Clear the DTC's. Refer to
.
- Repair is complete. Generate Readiness Code. Refer to
.
- Return vehicle to Customer.
-- NO:
- Perform the diagnostic procedure for any DTC's.
- If no DTC's return the repair is complete.
- Return vehicle to customer.
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