Suzuki Grand Vitara JB416 / JB420 (ESP model). Service manual — part 19

1A-72 Engine General Information and Diagnosis:

8

DTC check of A/C refrigerant pressure sensor circuit
1) Connect scan tool to DLC with ignition switch turned

OFF.

2) Turn ON ignition switch.
3) Check ECM for DTC of A/C refrigerant pressure sensor

circuit.

Is there DTC P0532 or DTC P0533?

Go to applicable DTC
diag. flow.

Go to Step 9.

9

A/C refrigerant pressure sensor voltage check
1) Check A/C refrigerant pressure sensor voltage referring

to “Inspection of ECM and Its Circuits”.

Is voltage within specified value?

Go to Step 10.

Check amount of
refrigerant. If OK,
replace A/C refrigerant
pressure sensor.

10 Radiator cooling fan check

1) Check radiator cooling fan referring to “Radiator Cooling

Fan Motor On-Vehicle Inspection in Section 1F in related
manual”.

Is check result satisfactory?

Radiator cooling fan
drive circuit malfunction.
If circuit is OK, go to
Step 7.

Replace radiator cooling
fan motor.

11 A/C compressor control system check

Is A/C compressor started when A/C and blower speed
selector switch are turned ON with engine running?

A/C system is in good
condition.

Go to Step 12.

12 A/C compressor relay circuit check

1) Measure voltage between “E23-49” wire terminal of

ECM connector and vehicle body ground under following
conditions respectively.

Voltage between “E23-49” terminal of ECM
connector and ground
While engine running and A/C switch turned OFF: 10
– 14 V
While engine running, A/C and blower speed
selector switch turned ON: 0 – 1 V

Is check result satisfactory?

Go to Step 13.

Go to Step 14.

13 A/C compressor relay check

1) Check A/C compressor relay referring to “A/C

Compressor Relay Inspection in Section 7B in related
manual”.

Is it in good condition?

A/C compressor drive
circuit malfunction.

Replace A/C
compressor relay.

14 A/C compressor relay circuit check

1) Remove A/C compressor relay with ignition switch

turned OFF.

2) Turn ON ignition switch, measure voltage between “YEL/

GRN” wire terminal of A/C compressor relay connector
and vehicle body ground.

Is voltage 10 –14 V?

Go to Step 15.

“YEL/GRN” wire is open
circuit.

15 A/C compressor relay check

1) Check A/C compressor relay referring to “A/C

Compressor Relay Inspection in Section 7B in related
manual”.

Is it in good condition?

“PNK” wire is open
circuit. If OK, substitute
a known-good ECM and
recheck.

Replace A/C
compressor relay.

Step

Action

Yes

No

Engine General Information and Diagnosis: 1A-73

Electric Load Signal Circuit Check

S5JB0E1104086

Wiring Diagram

WHT/BLU

BLU/ORN

WHT/RED

E23

C37

3

4

18

19

5

6

7

10

11

17

20

47

46

49

50

51

21

22

52

16

25

9

24

14
29

55

57

54 53

59

60

58

2

26

27

28

15
30

56

48

32

31

34

35

36

37

40

42

39 38

44

45

43

41

33

1

12

13

23

8

3

4

18

19

5

6

7

10

11

17

20

47

46

49

50

51

21

22

52

16

25

9

24

14
29

55

57

54 53

59

60

58

2

26

27

28

15
30

56

48

32

31

34

35

36

37

40

42

39 38

44

45

43

41

33

1

12

13

23

8

E23-4

E23-19

1

RED

WHT

E03-12

E03-6

WHT/BLU

WHT/RED

E03-8

E03-10

RED

WHT

G31-3

G31-1

2

C37-7

3

5

12V

4

I5JB0A110104-02

1. ECM

3. ABS / ESP

® control module

5. Electric load signal (blower motor

signal, rear defogger signal, headlight
signal and A/C switch signal), etc.

2. BCM

4. PSP switch

1A-74 Engine General Information and Diagnosis:

Troubleshooting

NOTE

• Before performed troubleshooting, be sure to read the “Precautions of ECM Circuit Inspection in

related manual”.

• When measuring circuit voltage, resistance and/or pulse signal at ECM connector, connect the

special tool to ECM and/or the ECM connectors referring to “Inspection of ECM and Its Circuits”.

Special Tools and Equipment

Special Tool

S5JB0E1108001

Step

Action

Yes

No

1

DTC check
1) Connect scan tool to DLC with ignition switch turned

OFF.

2) Turn ON ignition switch and check DTC.

Is there DTC P1674 and/or P1678?

Go to applicable DTC
diag. flow.

Go to Step 2.

2

Electric load signal circuit check
1) Start engine and select “DATA LIST” mode on scan tool.
2) Check electric load signal under following conditions

respectively.

A/C switch signal
Engine running, A/C switch OFF: OFF
Engine running, A/C switch ON and blower speed
selector turned 1st position or more: ON

Blower fan signal
Engine running, blower speed selector OFF: OFF
Engine running, blower speed selector 5th position
or more: ON

PSP signal
Engine running, steering wheel to neutral position:
OFF
Engine running, turning steering wheel to the right
or left as far as it stops: ON

Electric load signal
Engine running, rear defogger switch or headlight
switch OFF: OFF
Engine running, rear defogger switch or headlight
switch ON: ON

Is check result satisfactory?

Electric load signal
circuit is in good
condition

Check defective signal
circuit.

09933–06320
ECM check harness (120P)
)

Table of Contents 2- i

2

Section 2

CONTENTS

Suspension

Precautions . . . . . . . . . . . . . 2-*

Precautions. . . . . . . . . . . . . . . .. 2-*

Precautions on Suspension . . . . . . . . ... 2-*

Suspension General Diagnosis. . . ...2A-*

Diagnostic Information and Procedures. . . 2A-*

Suspension, Wheels and Tires Symptom

Diagnosis . . . . . . . . . . . . . . ...2A-*

Specifications. . . . . . . . . . . . . ... 2A-*

Wheel Alignment Specifications. . . . . . ...2A-*

Front Suspension . . . . . . . . . 2B-1

General Description . . . . . . . . . . . .2B-1

Front Suspension Construction. . . . . . ... 2B-1
Front Wheel Alignment Construction . . . . .. 2B-2

Repair Instructions . . . . . . . . . . . ..2B-2

Front Wheel Alignment Inspection and

Adjustment . . . . . . . . . . . . . . 2B-2

Front Strut Assembly Components . . . . . . 2B-4
Front Strut Assembly Removal and

Installation. . . . . . . . . . . . . . . 2B-5

Front Strut Assembly Disassembly and

Assembly . . . . . . . . . . . . . . .. 2B-7

Front Strut Assembly Check . . . . . . . ... 2B-8
Front Wheel Hub Assembly and Steering

Knuckle Components. . . . . . . . . . 2B-9

Front Wheel Hub Assembly Removal and

Installation. . . . . . . . . . . . . . . 2B-9

Steering Knuckle Removal and Installation. ... 2B-11

Front Wheel Hub, Disc, Nut and Bearing

Check. . . . . . . . . . . . . . . . .2B-*

Suspension Control Arm Removal and

Installation. . . . . . . . . . . . . ...2B-13

Suspension Control Arm / Bushing

Disassembly and Assembly . . . . . . . 2B-13

Suspension Control Arm / Steering Knuckle

Check. . . . . . . . . . . . . . . .. 2B-14

Suspension Control Arm Bushing Check. . . .2B-*

Suspension Control Arm Joint Check . . . ...2B-14
Front Suspension Frame, Stabilizer Bar and/

or Bushings Components. . . . . . . . 2B-15

Front Suspension Frame, Stabilizer Bar and/

or Bushings Removal and Installation. . . .2B-16

Front Suspension Frame Check . . . . . ... 2B-20

Front Stabilizer Bar, Bushing and/or Joint

Check . . . . . . . . . . . . . . . ..2B-21

Front Suspension Fasteners Check. . . . ..2B-21

Specifications. . . . . . . . . . . . . .2B-21

Tightening Torque Specifications. . . . . ..2B-21

Special Tools and Equipment . . . . . . ...2B-22

Recommended Service Material . . . . . ...2B-22
Special Tool . . . . . . . . . . . . . ..2B-22

Rear Suspension . . . . . . . . . ..2C-*

General Description . . . . . . . . . . . . 2C-*

Rear Suspension Construction . . . . . . ... 2C-*
Rear Wheel Alignment Construction . . . . ... 2C-*

Repair Instructions . . . . . . . . . . . .. 2C-*

Rear Wheel Alignment Inspection and

Adjustment . . . . . . . . . . . . . . 2C-*

Rear Shock Absorber and Rear Coil Spring

Components. . . . . . . . . . . . . .. 2C-*

Rear Shock Absorber Removal and

Installation . . . . . . . . . . . . . . . 2C-*

Shock Absorber Check . . . . . . . . . ... 2C-*
Rear Coil Spring and Bump Stopper Removal

and Installation . . . . . . . . . . . . .. 2C-*

Rear Coil Spring Check. . . . . . . . . ... 2C-*
Rod and Arm Components. . . . . . . . .. 2C-*
Control Rod Removal and Installation. . . . . 2C-*
Control Rod / Bushing Disassembly and

Assembly. . . . . . . . . . . . . . ... 2C-*

Control Rod Check. . . . . . . . . . . .. 2C-*
Trailing Rod Removal and Installation . . . . 2C-*
Trailing Rod / Bushing Disassembly and

Assembly. . . . . . . . . . . . . . ... 2C-*

Trailing Rod Check. . . . . . . . . . . .. 2C-*
Lower Arm Removal and Installation . . . . .. 2C-*
Lower Arm / Bushing Disassembly and

Assembly. . . . . . . . . . . . . . ... 2C-*

Lower Arm Check. . . . . . . . . . . . 2C-*
Upper Arm Removal and Installation . . . . .. 2C-*
Upper Arm / Bushing Disassembly and

Assembly. . . . . . . . . . . . . . ... 2C-*

Upper Arm Check. . . . . . . . . . . . 2C-*
Rear Suspension Frame Components. . . . 2C-*
Rear Suspension Frame Removal and

Installation . . . . . . . . . . . . . . . 2C-*

NOTE
For the items with asterisk (*) in the “CONTENTS” below, refer to the same section of the service manual
mentioned in the “FOREWORD” of this manual.