Objective:
Check operation of the intake manifold absolute pressure sensor.
Measurement:
Plot of voltage at the signal output of the intake manifold absolute pressure sensor.
Preparation:
Switch off the engine and ignition.
Connections:
| INPUT A | COM/TRIGGER | INPUT B |
|---|---|---|
| Connect the red measurement lead and the black ground lead to of the plug connector to the intake manifold absolute pressure sensor to the terminals according to the table below. |
| Engine | Red measurement lead | Black ground lead |
|---|---|---|
| Z20NET | 3 | 2 |
| 6VD1 | A | C |
| Other engines | 4 | 1 |
Procedure Tech 31:
- 1. Download Reference curve.
- 2. Start the engine and allow it to idle.
- 3. Depress the accelerator pedal quickly down to the limit stop and immediately release it again. The measurement should not take longer than half a second.
Reference Curve:
Procedure Tech 32:
- 1. Download Setup file (the Tech 32 uses only Setup files, no reference curves).
- 2. Start engine and allow it to idle.
- 3. Depress the accelerator pedal quickly down to the limit stop and immediately release it again. The measurement should not take longer than half a second.
