Camshaft Position Sensor -G40-, CHECKING
Function
Using the signal from the Camshaft Position Sensor -G40-, the precise position of the camshaft relative to the crankshaft is determined very quickly when the engine is started. Used in combination with the signal from the Engine Speed Sensor -G28-, the signal from the Camshaft Position Sensor -G40- allow to detect which cylinder is at TDC. The fuel can be injected into the corresponding cylinder and ignited.
Special tools and workshop equipment required
- Multimeter
- Wiring Diagram
- Scan Tool
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 Man. Transmission, ensure Shifter Lever position is in "N" with Parking Brake applied.
- Coolant Temperature: ≥ 80 °C.
- Observe all safety precautions: SAFETY PRECAUTIONS
- View clean working conditions: CLEAN WORKING CONDITIONS
Test Procedure
| Step |
Procedure |
Result / Action to Take |
| 1 |
- PERFORM: Preliminary Check to verify the customers complaint. Refer to PRELIMINARY CHECK
-- Was complaint verified? |
- NO:
- Gather more Information from customer about the complaint
|
| 2 |
- IGNITION: ON
- DISCONNECT: Camshaft Position Sensor -G40- electrical connector
- CHECK: Camshaft Position Sensor -G40- wiring connector terminals 1 to 3 for voltage
- SPECIFIED VALUE: About 5.0 V
- IGNITION: OFF
-- Was value obtained? |
|
| 3 |
- REMOVE: Engine Control Module - J623-. Refer to appropriate service manual.
- CHECK: Camshaft Position Sensor -G40- electrical connector terminals 2 to the Engine Control Module - J623- electrical connector terminals T105 / 18.
- SPECIFIED VALUE: 0.5 Ω (± 0.3 Ω)
-- Was value obtained? |
- YES:
- REPLACE: Camshaft Position Sensor -G40-. Refer to appropriate repair manual.
- GO TO: Step 5
- NO:
- CHECK: wiring for open, high resistance, short or electrical connector for damage, corrosion, loose or broken terminals
- REPAIR: faulty wiring or connector
- GO TO: Step 5
|
| 4 |
- REMOVE: Engine Control Module - J623-. Refer to appropriate service manual.
- CHECK: Camshaft Position Sensor -G40- electrical connector terminals 1 to the Engine Control Module - J623- electrical connector terminals T105 / 38.
- CHECK: Camshaft Position Sensor -G40- electrical connector terminals 3 to the Engine Control Module - J623- electrical connector terminals T105 / 39.
- SPECIFIED VALUE: 0.5 Ω (± 0.3 Ω)
-- Was value obtained? |
- YES:
- REPLACE Engine Control Module -J623- Refer to appropriate repair manual
- GO TO: Step 5
- NO:
- CHECK: wiring for open, high resistance, short or electrical connector for damage, corrosion, loose or broken terminals
- REPAIR: faulty wiring or connector
- GO TO: Step 5
|
| 5 |
- Final Procedure
- Perform a road test to verify repair.
- Do any DTC's return:
|
- NO:
- Repair is complete, Generate readiness code. Refer to READINESS CODE .
- Return vehicle to Customer
|