Oscilloscope Patterns and Waveforms

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




3. Move the cursor to VEHICLE & ENGINE SELECTION. Press the TRIGGER key to enter this selection.




4. Move the cursor to SELECT NEW VEHICLE YEAR & MODEL. Press the TRIGGER key to enter this selection.




5. Move the cursor to 2000. 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. Move the cursor to the vehicle selected. Press the TRIGGER key.
8. Connect NGS tester test leads to the following PCM connector terminals:
- (+) lead - PCM 85 terminal
- (-) lead - PCM 103 terminal




9. Move the cursor to DIGITAL MEASUREMENT SYSTEM. Press the TRIGGER key to enter this selection.




10. Move the cursor to FREQUENCY METER. Press the TRIGGER key to enter this selection.




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




12. Move the cursor to PID/DATA MONITOR. Press the TRIGGER key to enter this selection.




13. Move the cursor to PCM. Press the TRIGGER key to enter this selection.




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

NOTE:
- The selected threshold voltage indicated on the FREQUENCY METER SCREEN should be 2VOLT DC. If incorrect threshold voltage is selected, calculated frequency value is incorrect.
- Threshold voltage should be DC range. Press AC/DC key to select DC range.







17. Inspect frequency value and RPM PID.

Specifications:
RPM PID: 650 - 750 RPM
FREQUENCY: 16 - 18 Hz

18. Press LEVEL key to change the threshold voltage to 6VOLT.
19. Make sure that the FREQUENCY indicates 0 Hz.
- If FREQUENCY value or PCM terminal 85 voltage are out of specifications, carry out the "Circuit Open/Short Inspection".

Circuit Open/Short Inspection
1. Remove the PCM.




2. Connect the SST (104 Pin Breakout Box) to the PCM as shown.
3. Tighten the connector attaching screw.

Tightening torque:
7.9 - 10.7 N.m {80 - 110 kgf.cm, 69.5 - 95.4 in.lbf}




4. Inspect for an open or short circuit in the following wiring harnesses by probing the applicable sensor and SST (104 Pin Breakout Box) terminals with ohmmeter leads.
- If there is an open or short circuit, repair or replace wiring harnesses.
- If there is no open or short circuit, replace the CMP sensor.

Open circuit
- CMP signal circuit (CMP sensor connector terminal B and PCM connector terminal 85)
- Power circuit (CMP sensor connector terminal A and main relay terminal D through common connector)
- GND circuit (CMP sensor connector terminal C and PCM connector terminal 103)

Short circuit
- CMP signal circuit (CMP sensor connector terminal B and PCM connector terminal 85 to GND)
- Power circuit (CMP sensor connector terminal A and main relay terminal D through common connector to GND)

5. Reconnect the CMP sensor connector.
6. Inspect the camshaft pulley (exhaust side) for damage and cracks.