Suzuki Grand Vitara JB416 / JB420. Manual — part 52

1A-157 Engine General Information and Diagnosis:

DTC P0533: A/C Refrigerant Pressure Sensor Circuit High

S5JB0A1104052

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

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”.

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”

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.

Engine General Information and Diagnosis: 1A-158

DTC P0601 / P0602 / P0607: Internal Control Module Memory Check Sum Error / Control Module
Programming Error / Control Module Performance

S5JB0A1104053

System Description
Internal control module is installed in ECM.

DTC Detecting Condition and Trouble Area

DTC Confirmation Procedure

1) Connect scan tool to DLC with ignition switch turned OFF.
2) Turn ON ignition switch and clear DTC, pending DTC and freeze frame data by using scan tool.
3) Start engine and run it at idle if possible.
4) Check DTC and pending DTC by using scan tool.

DTC Troubleshooting

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

5

A/C refrigerant pressure sensor ground circuit check
1) Turn OFF ignition switch, measure resistance between

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

Is resistance below 5

Ω

?

Go to Step 7.

Go to Step 6.

6

ECM ground circuit check
1) Remove ECM from its bracket with ECM connectors

connected.

2) Measure resistance between engine ground and “C37-

57” terminal of ECM connector.

Is resistance below 5

Ω

?

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

ECM grounds “C37-58”,
“C37-48”, “C37-30”,
“C37-29” and/or “C37-
15” is open or high
resistance 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 in
Section 7B”

Is it good condition?

Substitute a known-
good ECM and recheck.

Faulty A/C refrigerant
pressure sensor.

Step

Action

Yes

No

DTC detecting condition

Trouble area

DTC P0601:
Data write error or check sum error
(1 driving cycle detection logic)
DTC P0602:
Data programming error
(1 driving cycle detection logic)
DTC P0607:
Data programming error
(1 driving cycle detection logic)

ECM

1A-159 Engine General Information and Diagnosis:

DTC P0616: Starter Relay Circuit Low

S5JB0A1104054

Wiring Diagram

DTC Detecting Condition and Trouble Area

Step

Action

Yes

No

1

DTC recheck
1) Clear DTC referring to “DTC Clearance”.
2) Turn OFF ignition switch.
3) Turn ON ignition switch and check DTC.

Is DTC P0601 or P0607 still indicated?

Go to Step 2.

Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”

2

ECM power and ground circuit check
1) Check that ECM power supply circuit and ECM ground

circuit is in good condition referring to “ECM Power and
Ground Circuit Check”.

Are check results OK?

Substitute a known-
good ECM and recheck.

Repair ECM power or
ground circuit.

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

3

7

1

E23-29

6

BLK/YEL

BLK/YEL

BLK/YEL

C37-22

BLK/WHT

BLK/YEL

BLK/YEL

8

4

WHT/GRN

WHT/RED

5

BLK/RED

[A]: BLK/RED
[B]: BLK

BLK

C37-15

C37-29
C37-48

BLK/ORN

C37-58

C37-30 BLK/ORN

BLK/YEL
BLK/YEL
BLK/YEL

9

10

BLK/YEL

2

11

I5JB0A110062-02

[A]: For A/T model

4. Fuse box No.2

9. “STR MOT” fuse

[B]: For M/T model

5. Transmission range switch (for A/T model)

10. “IGN” fuse

1. ECM

6. Starting motor control relay

11. Starting motor magnet switch

2. Starter motor

7. “IG COIL” fuse

3. Ignition switch

8. “ST SIG” fuse

DTC detecting condition

Trouble area

Engine starts even though vehicle is at stop and engine
starter signal is low voltage.
(2 driving cycle detection logic)

• Engine starter signal circuit
• ECM

Engine General Information and Diagnosis: 1A-160

DTC Confirmation Procedure

1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Start engine.
4) 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”.

DTC P0617: Starter Relay Circuit High

S5JB0A1104055

Wiring Diagram
Refer to “DTC P0616: Starter Relay Circuit Low”.

DTC Detecting Condition and Trouble Area

DTC Confirmation Procedure

1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Start engine and run it at idle for 3 min. or more.
4) Check DTC and pending DTC.

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”.

2

Signal circuit check
1) Turn OFF ignition switch.
2) Remove ECM from its bracket with ECM connectors

connected.

3) Measure voltage at terminal “C37-22” of ECM connector,

under following condition.

Voltage at terminal “C37-22” of ECM connector
While engine cranking: 6 – 14 V
After starting engine: 0 – 1 V

Is each voltage within specified range?

Poor “C37-22”
connection or
intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”.
If wire and connections
are OK, substitute a
known-good ECM and
recheck.

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

DTC detecting condition

Trouble area

Engine starter signal is high voltage for 180 seconds
continuously while engine is running.
(2 driving cycle detection logic)

• Engine starter signal circuit
• ECM