Suzuki Grand Vitara JB416 / JB420 / JB419. Manual - part 53

1A-159 Engine General Information and Diagnosis: For Petrol Engine Model

DTC Troubleshooting

NOTE
Before this trouble shooting is performed, read the precautions for DTC troubleshooting referring to 
“Precautions for DTC Troubleshooting: For Petrol Engine Model”.

 

Step

Action

Yes

No

1

Was “Engine and Emission Control System Check” 
performed?

Go to Step 2.

Go to “Engine and 
Emission Control 
System Check: For 
Petrol Engine Model”.

2

Stop lamp (brake pedal) switch check
1) Check stop lamp (brake pedal) switch referring to “Brake 

Light Switch Inspection in Section 9B”.

Is it in good condition?

Go to Step 3.

Replace stop lamp 
(brake pedal) switch.

3

Stop lamp (brake pedal) switch power circuit check
1) Disconnect connector from stop lamp (brake pedal) 

switch connector with ignition switch turned OFF.

2) Check for proper connection to switch connector.
3) If connection are OK, measure voltage between each 

“BLU/BLK” wire terminal and “GRN” wire terminal of stop 
lamp switch connector and vehicle body ground with 
ignition switch tuned ON.

Is each measured voltage 10 – 14 V?

Go to Step 4.

Check related fuse and 
repair defective circuit.

4

Stop lamp (brake pedal) switch signal circuit check
1) Disconnect connectors from ECM with ignition switch 

turned OFF.

2) Check for proper connection of each switch circuit 

terminal to ECM connector.

3) If connections are OK, check stop lamp switch circuit for 

the following.
• Resistance of each “YEL/GRN” wire terminal and 

“GRN/WHT” wire terminal of stop lamp (brake pedal) 
switch between stop lamp (brake pedal) switch 
connector and ECM connector is less than 1 

Ω 

(continuity check)

• Resistance between “YEL/GRN” wire terminal and 

“GRN/WHT” wire terminal of stop lamp (brake pedal) 
switch connector are infinity (no continuity check)

• Resistance between each “YEL/GRN” wire terminal 

and “GRN/WHT” wire terminal of stop lamp (brake 
pedal) switch connector and vehicle body ground is 
infinity (ground short check)

• Voltage of between each “YEL/GRN” wire terminal 

and “GRN/WHT” wire terminal of stop lamp (brake 
pedal) switch connector and vehicle body ground is 0 
V with ignition switch tuned ON (power short check)

Is it in good condition?

Substitute a known-
good ECM and recheck.

Repair or replace 
defective wire.

Engine General Information and Diagnosis: For Petrol Engine Model 1A-160

DTC P0532: A/C Refrigerant Pressure Sensor Circuit Low

S6JB0A1114053

Wiring Diagram

DTC Detecting Condition and Trouble Area

NOTE
When DTC P0107 and P1501 are indicated together, it is possible that “GRY/RED” wire circuit open.

 

DTC Confirmation Procedure

1) Connect scan tool to DLC with ignition switch turned OFF.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Check DTC and pending DTC.

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

4

1

2

3

GRY/RED

GRY/RED

5V

5V

C37-14  

C37-12  

C37-57  

GRY/BLK

GRY/GRN

GRY/GRN

C37-15  

C37-29  
C37-48  

BLK/ORN

C37-58  

C37-30  BLK/ORN

BLK/YEL
BLK/YEL
BLK/YEL

I5JB0A110061-01

1. A/C refrigerant pressure sensor

3. To other sensors

2. To electric load current sensor (for J20 engine) and MAP sensor

4. ECM

DTC detecting condition

Trouble area

A/C refrigerant pressure sensor signal voltage is less than 
0.15 V for 0.5 sec. continuously.
(1 driving detection logic but MIL does not light up)

• A/C refrigerant pressure sensor circuit
• A/C refrigerant pressure sensor
• ECM

1A-161 Engine General Information and Diagnosis: For Petrol Engine Model

DTC Troubleshooting

NOTE
Before this trouble shooting is performed, read the precautions for DTC troubleshooting referring to 
“Precautions for DTC Troubleshooting: For Petrol Engine Model”.

 

Step

Action

Yes

No

1

Was “Engine and Emission Control System Check” 
performed?

Go to Step 2.

Go to “Engine and 
Emission Control 
System Check: For 
Petrol Engine Model”.

2

A/C refrigerant pressure sensor power supply circuit 
check
1) Disconnect connector from A/C refrigerant pressure 

sensor with ignition switch turned OFF.

2) Check for proper connection of A/C refrigerant pressure 

sensor at “GRY/RED”, “GRY/BLK” and “GRY/GRN” wire 
terminals.

3) Turn ON ignition switch, measure voltage between 

engine ground and “GRY/RED” wire terminal of A/C 
refrigerant pressure sensor connector.

Is voltage 4 – 6 V?

Go to Step 5.

Go to Step 3.

3

A/C refrigerant pressure sensor power supply circuit 
check
1) Disconnect connectors from ECM with ignition switch 

turned OFF.

2) Measure resistance between “GRY/RED” wire terminal 

of A/C refrigerant pressure sensor connector and “C37-
14” terminal of ECM connector.

Is resistance below 3 

Ω

?

Go to Step 4.

“GRY/RED” wire is open 
circuit.

4

A/C refrigerant pressure sensor power supply circuit 
check
1) Measure resistance between engine ground and “C37-

14” terminal of ECM connector.

Is resistance infinity?

Go to Step 6.

“GRY/RED” wire is 
shorted to ground 
circuit.

5

A/C refrigerant pressure sensor signal circuit check
1) Connect connectors to ECM.
2) Turn ON ignition switch, measure voltage between 

engine ground and “GRY/BLK” wire terminal of A/C 
refrigerant pressure sensor connector.

Is voltage 4 – 6 V?

Go to Step 7.

Go to Step 6.

6

A/C refrigerant pressure sensor signal circuit check
1) Disconnect connectors from ECM with ignition switch 

turned OFF.

2) Measure resistance between engine ground and “C37-

12” terminal of ECM connector.

Is resistance infinity?

Go to Step 7.

“GRY/BLK” wire is 
shorted to ground 
circuit.

7

A/C refrigerant pressure sensor check
1) Check A/C refrigerant pressure sensor referring to “A/C 

Refrigerant Pressure Sensor and Its Circuit Inspection 
(Petrol Engine Model) in Section 7B”

Is it in good condition?

Substitute a known-
good ECM and recheck.

Faulty A/C refrigerant 
pressure sensor.

Engine General Information and Diagnosis: For Petrol Engine Model 1A-162

DTC P0533: A/C Refrigerant Pressure Sensor Circuit High

S6JB0A1114054

Wiring Diagram
Refer to “DTC P0532: A/C Refrigerant Pressure Sensor Circuit Low: For Petrol Engine Model”.

DTC Detecting Condition and Trouble Area

NOTE
When DTC P0108, P0113 and P0118 are indicated together, it is possible that “GRY/GRN” wire circuit 
open.

 

DTC Confirmation Procedure

1) Connect scan tool to DLC with ignition switch turned OFF.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Check DTC and pending DTC.

DTC Troubleshooting

NOTE
Before this trouble shooting is performed, read the precautions for DTC troubleshooting referring to 
“Precautions for DTC Troubleshooting: For Petrol Engine Model”.

 

DTC detecting condition

Trouble area

A/C refrigerant pressure sensor signal voltage is higher 
than 4.93 V for 0.5 sec. continuously.
(1 driving detection logic but MIL does not light up)

• A/C refrigerant pressure sensor circuit
• A/C refrigerant pressure sensor
• ECM

Step

Action

Yes

No

1

Was “Engine and Emission Control System Check” 
performed?

Go to Step 2.

Go to “Engine and 
Emission Control 
System Check: For 
Petrol Engine Model”

2

A/C refrigerant pressure sensor power supply circuit 
check
1) Disconnect connector from A/C refrigerant pressure 

sensor with ignition switch turned OFF.

2) Check for proper connection of A/C refrigerant pressure 

sensor at “GRY/RED”, “GRY/BLK” and “GRY/GRN” wire 
terminals.

3) Turn ON ignition switch, measure voltage between 

engine ground and “GRY/RED” wire terminal of A/C 
refrigerant pressure sensor connector.

Is voltage 4 – 6 V?

Go to Step 4.

Go to Step 3.

3

A/C refrigerant pressure sensor signal circuit check
1) Turn ON ignition switch, measure voltage between 

engine ground and “GRY/BLK” wire terminal of A/C 
refrigerant pressure sensor connector.

Is voltage 4 – 6 V?

Go to Step 5.

Go to Step 4.

4

A/C refrigerant pressure sensor signal circuit check
1) Disconnect connectors from ECM with ignition switch 

turned OFF.

2) Measure resistance between “GRY/BLK” wire terminal of 

A/C refrigerant pressure sensor connector and “C37-12” 
terminal of ECM connector.

Is resistance below 2 

Ω

?

“GRY/BLK” wire is 
shorted to power supply 
circuit.

“GRY/BLK” wire is open 
or high resistance 
circuit.