Component Tests and General Diagnostics

Visual inspection
1. Remove the CMP sensor.
2. Make sure that the CMP sensor is free of any metallic shavings or particles. If metallic shavings or particles are found on the sensor, clean them off.
3. Install the CMP sensor.

Frequency inspection
1. Connect NGS tester to DLC-2.
2. Start the engine.




3. Move the cursor to VEHICLE AND ENGINE SELECTION.




4. Move the cursor to SELECT NEW VEHICLE YEAR & MODEL. Press the trigger key to enter this selection.
5. Move the cursor to 2001-VIN#1O:Y. Press the trigger key to enter this selection.
6. Move the cursor to appropriate model. Press the trigger key to enter this selection.
7. The vehicle selection screen showing the selected vehicle will be displayed.




8. Move the cursor to the vehicle selected. Press the trigger key.
9. Connect NGS tester test leads to the to lowing PCM connector terminals:

(+) lead - PCM 3V terminal
(-) lead - PCM 4A terminal




10. Move the cursor to DIGITAL MEASUREMENT SYSTEM. Press the trigger key to enter this selection.




11. Move the cursor to FREQUENCY METER. Press the trigger key to enter this selection.




12. The FREQUENCY METER screen will be displayed. Press LINK key to select RPM PID.




13. Move the cursor to PID/DATA MONITOR. Press trigger key to enter this selection.




14. Move the cursor to PCM. Press trigger key to enter this selection.




15. Move the cursor to RPM. Press trigger key to select PID.
16. Press START to begin.
17. The FREQUENCY METER screen will be displayed.

NOTE: The selected threshold voltage indicated on the FREQUENCY METER SCREEN should be 2 VOLT DC.

- If incorrect threshold voltage is selected, incorrect frequency value is indicated. Press LEVEL to select correct threshold voltage if incorrect threshold voltage is selected.
- Threshold voltage should be DC range. Press AC/DC key to select DC range.







18. Inspect the frequency value and RPM PID.

Specifications
RPM PID: 750 - 850 RPM
FREQUENCY: 18 - 22 Hz

19. Press LEVEL key to change the threshold voltage to 6 VOLT.
20. Make sure that the FREQUENCY indicates 0 Hz.
- If FREQUENCY value is out of specification, "Circuit Open/Short Inspection."

21. Reconnect the CMP sensor connector.
22. Check the camshaft pulley for damage and cracks.

Circuit Open/Short Inspection




Open circuit
- If there is no continuity, the circuit is open. Repair or replace the harness.
- CMP circuit (CMP sensor connector terminal B and PCM connector terminal 3V.)
- Power circuit (CMP sensor connector connector terminal A and main relay terminal D through common connector.)
- GND circuit (CMP sensor terminal C and body GND.)

Short circuit
- If there is continuity, the circuit is shorted. Repair or replace the harness.
- CMP sensor connector terminal B and PCM connector terminal 3V to ground.
- CMP sensor connector terminal A and main relay terminal D through common connector to GND.