Mass Air Flow Sensor (Maf Sensor) - Suzuki Grand Vitara XL-7 Service Manual

6E3-34 ENGINE AND EMISSION CONTROL SYSTEM (RHZ ENGINE)

MASS AIR FLOW SENSOR (MAF SENSOR)

INSPECTION
NOTE:
Use voltmeter with high-impedance (10 kΩ/V minimum) or dig-
ital type voltmeter.
1) Connect voltmeter to "BLK/WHT" wire terminal of MAF sensor
coupler disconnected and ground.
2) Turn ignition switch ON and check that voltage is battery volt-
age.
If not, check if wire harness is open or connection is poor.
3) Connect MAF sensor coupler to MAF sensor.
4) Check voltage at MAF sensor output terminal "C51-13" or
"E228-29" referring to "VOLTAGE CHECK" in following section.
D For vehicle equipped with single-connector ECM : Section 6
D For vehicle equipped with triple-connector ECM : Section 6-1
Voltage: About 0.6 V
5) Start engine and check that voltage is lower than 5 V and it rises
as engine speed increases.
(Reference data: about 2.6 V at specified idle speed)
If check result is not as specified above, cause may lie in wire
harness, coupler connection, MAF sensor or ECM.
REMOVAL
1) Disconnect negative cable at battery and coupler (1) from MAF
sensor (2).
2) Remove air cleaner outlet hose (3) from turbocharger and MAF
sensor.