Suzuki Grand Vitara JB627. Manual — part 79
1C-14 Engine Electrical Devices:
Knock Sensor Removal and Installation
S6JB0B1306020
Removal
1) Disconnect negative cable at battery.
2) Remove intake manifold from cylinder head referring
to “Intake Collector and Intake Manifold Removal
and Installation in Section 1D”.
3) Disconnect knock sensor connector (1).
4) Remove knock sensor (2) from cylinder block.
Installation
Reverse removal procedure for installation.
Tightening torque
Knock sensor (a): 22 N·m (2.2 kgf-m, 16.0 lb-ft)
Engine and Emission Control System Relay
Inspection
S6JB0B1306021
Main, Fuel Pump, Starting Motor Control and
Throttle Actuator Control Relays (Single Type Relay)
1) Disconnect negative cable at battery.
2) Remove main relay (1), fuel pump relay (3), starting
motor control relay (2), throttle actuator control relay
(4) from fuse box No.2 (5) and/or relay box (6).
3) Check that there is no continuity between terminal
“C” and “D”. If there is continuity, replace relay.
4) Connect battery positive (+) terminal to terminal “B”
of relay. Connect battery negative (–) terminal to
terminal “A” of relay. Check for continuity between
terminal “C” and “D”. If there is no continuity when
relay is connected to the battery, replace defective
relay.
1
2
I6JB01130025-01
(a)
I6JB01130026-01
“D”
“B”
“A”
“C”
1
3
2
4
6
I5JB0C130001-01
Engine Electrical Devices: 1C-15
HO2S Heater Relay (Integration Type Relay)
1) Disconnect negative cable at battery.
2) Remove integration relay No.2 (1) from fuse box
No.2 (2).
3) Check that there is no continuity between terminals
“[A]-1” and “[B]-8” of relay.
If there is continuity, replace relay.
4) Connect battery positive (+) terminal to “[B]-7”
terminal of relay. Connect battery negative (–)
terminal to “[B]-6” terminal of relay. Check for
continuity between terminal “[A]-1” and “[B]-8”. If
there is no continuity when relay is connected to the
battery, replace integration relay No.2.
IMT Vacuum Tank Assembly Inspection
S6JB0B1306022
CAUTION
!
Do not apply vacuum more than –86 kPa (–
12.47 psi); otherwise IMT vacuum solenoid
valve and vacuum tank could be damaged.
IMT vacuum solenoid valve
1) Disconnect negative cable at battery.
2) Remove vacuum tank assembly mounting bolts.
3) With ignition switch OFF, disconnect connector from
IMT vacuum solenoid valve.
4) Check resistance of IMT vacuum solenoid valve.
If resistance is as specified, proceed to next
operation check. If not, replace IMT vacuum
solenoid valve.
Resistance of IMT vacuum solenoid valve
Between two terminals: 33 – 39
Ω at 20 °C (68 °F)
5) Disconnect vacuum hoses (1 and 2) from IMT valve
and vacuum tank.
6) With connector disconnected, apply vacuum (–53
kPa (– 7.69 psi) to –67 kPa (–9.72 psi)) to hose (2).
Vacuum is maintained.
1. A/T relay
2. HO2S heater relay
3. Compressor relay
2
1
1
I5JB0C130002-01
1
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
“[B]-6”
[A]
[B]
“[A]-1”
“[B]-8”
“[B]-7”
[A]
[B]
1
2
3
I6JB01130038-01
I5JB0A130005-01
1
2
I5JB0A130006-01
1C-16 Engine Electrical Devices:
7) With connector disconnected, apply vacuum to hose
(1). Air goes into nozzle (2).
8) Connect 12 V-battery to IMT vacuum solenoid valve
terminals. In this state, apply vacuum to hose (2). Air
goes into hose (1).
If check result is not as described, replace IMT
vacuum solenoid valve.
9) Connect vacuum hoses to IMT vacuum solenoid
valve and IMT vacuum tank.
10) Connect IMT vacuum solenoid valve connector
securely.
IMT Vacuum Tank
1) Check for outside of IMT vacuum tank visually.
2) Disconnect vacuum hoses from intake manifold and
IMT vacuum solenoid valve.
3) Check for vacuum passage of IMT vacuum tank as
follows by using vacuum pump.
a) When applying vacuum (– 53 kPa (– 7.69 psi) to
– 67 kPa (–9.72 psi)) to hose (1), vacuum is
maintained (there is no leakage): [A]
b) When applying vacuum to hose (2), vacuum is
not maintained: [B]
If check result is not described, replace IMT
vacuum tank assembly.
4) Connect vacuum hoses to intake manifold and IMT
vacuum solenoid valve.
2
1
I5JB0A130007-01
2
1
I5JB0A130008-01
[B]
2
[A]
1
I5JB0A130009-01
Engine Electrical Devices: 1C-17
Specifications
Tightening Torque Specifications
S6JB0B1307001
Reference:
For the tightening torque of fastener not specified in this section, refer to “Fastener Information in Section 0A”.
Fastening part
Tightening torque
Note
N
⋅m
kgf-m
lb-ft
MAF and IAT Sensor screw
1.5
0.15
1.1
Accelerator pedal position (APP) sensor
assembly nut
6.0
0.6 4.5
APP sensor assembly bracket nut
6.0
0.6
4.3
ECT sensor
12
1.2
8.5
MAP sensor bolt
5
0.5
3.5
A/F sensor
45
4.5
32.5
Heated oxygen sensor
45
4.5
32.5
CMP sensor bolt
11
1.1
8.0
CKP sensor bolt
11
1.1
8.0
Knock sensor
22
2.2
16.0
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