Manifold Differential Pressure Sensor (Grand VITARA, VITARA & XL-7)
- Remove Manifold Differential Pressure (MDP) sensor from intake manifold. Inspect intake manifold vacuum passage, MDP sensor air vent hole and vacuum passage for clogs. Clean passages if necessary. Inspect sensor O-ring for damage and deterioration. If no problem is found, go to next step.
- Connect three 1.5 volt batteries in series. Connect positive terminal of batteries to MDP sensor terminal No. 3 (Vin). Connect negative terminal of batteries to MAP sensor terminal No. 2 (GROUND). See Figure
. Using DVOM, measure voltage between MDP sensor terminal No. 1 (Vout) and ground side of batteries. Voltage reading should be 4.5 volts. Using hand-held vacuum pump apply specified vacuum to MDP sensor, and check MDP sensor output voltage at specified pressure. See MANIFOLD DIFFERENTIAL PRESSURE SENSOR OUTPUT VOLTAGE (GRAND VITARA, VITARA & XL-7)
table for voltage specifications. If voltage readings are not within specifications, replace MDP sensor and retest system.
MANIFOLD DIFFERENTIAL PRESSURE SENSOR OUTPUT VOLTAGE (GRAND VITARA, VITARA & XL-7)
| Vacuum (In. Hg) |
Output Voltage |
| 7.8 |
2.40-4.40 |
| 9.8 |
2.13-4.13 |
| 11.8 |
1.86-3.86 |
| 13.8 |
1.59-3.59 |
| 15.7 |
1.32-3.32 |