Mass Air Flow (Maf) And Intake Air Temperature (Iat) Sensor Removal And Installation - Suzuki Grand Vitara 2011 Manual

1C-16 Engine Electrical Devices: For Petrol Engine Model
6) Turn ON ignition switch and check MAF signal
voltage between "C37-26" terminal circuit and "C37-
27" terminal circuit of special tool.
MAF signal voltage between "C37-26" terminal
circuit and "C37-27" terminal circuit of special
tool
MAF signal voltage of MAF and IAT sensor with
ignition switch turned ON: 0.5 – 1.0 V
"C37-27"
1. ECM
7) Start engine and check that voltage is lower than 5 V
and it rises as engine speed increases.
MAF signal voltage between "C37-26" terminal
circuit and "C37-27" terminal circuit of special
tool
MAF signal reference voltage of MAF and IAT
sensor at specified Idle speed: 1.3 – 1.8 V
8) If check result is not as specified above, cause may
lie in wire harness, connector connection, MAF and
IAT sensor or ECM.
"C37-26"
1
I4RS0A130009-01
Mass Air Flow (MAF) and Intake Air
Temperature (IAT) Sensor Removal and
Installation
CAUTION
!
• Do not disassemble MAF and IAT sensor.
• Do not expose MAF and IAT sensor to any
shock.
• Do not clean MAF and IAT sensor.
• If MAF and IAT sensor has been dropped, it
should be replaced.
• Do not blow compressed air by using air
gun or the like.
• Do not put finger or any other object into
MAF and IAT sensor. Malfunction may
occur.
Removal
1) Disconnect negative cable at battery.
2) Disconnect MAF and IAT sensor connector.
3) Remove MAF and IAT sensor (1) from air cleaner
case.
Installation
Reverse removal procedure noting the followings.
• Tighten MAF and IAT sensor screws to specified
torque.
Tightening torque
MAF and IAT sensor screw (a): 1.5 N·m (0.15 kgf-
m, 1.1 lb-ft)
• Connect MAF and IAT sensor connector securely.
S6JB0A1316020
1
I5JB0A130033-02
(a)
I5JB0A130034-02