Dtc P1408 Manifold Absolute Pressure Sensor Circuit Malfunction - Suzuki 2000 Grand Vitara SQ625 Service Manual

6-1-114 ENGINE (H25 ENGINE)

DTC P1408 MANIFOLD ABSOLUTE PRESSURE SENSOR CIRCUIT MALFUNCTION

WIRING DIAGRAM
TERMINAL ARRANGEMENT OF ECM (PCM) COUPLER (VIEWED FROM HARNESS SIDE)
CIRCUIT DESCRIPTION
Refer to "ENGINE AND EMISSION CONTROL" section.
DTC DETECTING CONDITION AND TROUBLE AREA
DTC DETECTING CONDITION
MAP sensor signal voltage continues more than 2.7 V for 5 sec.
under low load condition.
MAP sensor signal voltage continues less than 1.1 V for 5 sec.
under high load condition.
DTC CONFIRMATION PROCEDURE
NOTE:
Check to make sure that following conditions are satisfied when using this DTC CONFIRMATION PROCE-
DURE.
WARNING:
_ When performing a road test, select a place where there is no traffic or possibility of a traffic accident
and very careful during to avoid occurrence of an accident.
_ Road test, should be carried out with 2 person, a driver and tester, on a level road.
TROUBLE AREA
MAP sensor and its circuit
ECM (PCM)
1. MAP sensor