Manifold Pressure/Vacuum Sensor: Testing and Inspection
MANIFOLD ABSOLUTE PRESSURE (MAP) SENSORNOTE: Perform the following test only when directed.
1. Inspect the EGR boost sensor (BP), BARO/MAP sensor (BP WITH TC) for damage and cracks.
2. Inspect the vacuum hose for improper routing, kinks or leaks.
- If the above are okay, perform the "Circuit Open/Short Inspection."
3. Reconnect the EGR boost sensor (BP), BARO/MAP sensor (BP WITH TC) connector.
- If the above open or short circuit are correct, replace EGR boost sensor (BP), BARO/MAP sensor (BP WITH TC).
Circuit Open/Short Inspection
Open circuit
- If there is no continuity, the circuit is open. Repair or replace the harness.
- EGR boost circuit (EGR boost sensor (BP), BARO/MAP sensor (BP WITH TC) connector terminal B and PCM connector terminal 4AE.)
- Reference voltage circuit (EGR boost sensor (BP), BARO/MAP sensor (BP WITH TC) connector terminal C and PCM connector terminal 4L.)
- GND circuit (EGR boost sensor (BP), BARO/ MAP sensor (BP WITH TC) connector terminal A and PCM connector terminal 40 through common connector.)
Short circuit
- If there is continuity, the circuit is shorted. Repair or replace the harness.
- EGR boost sensor (BP), BARO/MAP sensor (BP WITH TC) connector terminal C and PCM connector terminal 4L through common connector to GND.
- EGR boost sensor (BP), BARO/MAP sensor (BP WITH TC) connector terminal B and PCM connector 4AE through common connector to GND.