Dtc P1408 Manifold Absolute Pressure Sensor Circuit Malfunction - Suzuki GRAND VITARA XL-7 Owner's Manual

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DTC P1408 Manifold Absolute Pressure Sensor Circuit Malfunction

WIRING DIAGRAM

1. MAP sensor

2. ECM (PCM)

DTC DETECTING CONDITION AND TROUBLE AREA

DTC DETECTING CONDITION

• While engine is running after being warmed up and

with throttle opening smaller than specification,

higher than 4.6 V manifold absolute pressure sen-

sor output voltage is detected for specified time or

with throttle opening larger than specification, lower

than 0.2 V manifold absolute pressure output volt-

age is detected for specified time.

(2 driving cycle detection logic)

DTC CONFIRMATION PROCEDURE

• When performing a road test, select a place where there is no traffic or possibility of a traffic acci-

dent and be very careful during testing to avoid occurrence of an accident.

• Road test should be carried out with 2 persons, a driver and a tester, on a level road.

Check to make sure that following condition is satisfied when using this "DTC CONFIRMATION PRO-

• Intake air temp. : – 8°C (18°F) or higher

• Engine coolant temp. : – 8 – 110°C (18 – 230°F)

• Altitude (barometric pressure) : 2400 m, 8000 ft or less (560 mmHg (75 kPa) or more)

ENGINE GENERAL INFORMATION AND DIAGNOSIS (H27 ENGINE) 6-1-111

• Manifold absolute pressure sensor

• Manifold absolute pressure sensor vacuum pas-

TROUBLE AREA

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