Suzuki Grand Vitara JB416 / JB420. Manual - part 60

1A-189 Engine General Information and Diagnosis: 

DTC P2101: Throttle Actuator Control Motor Circuit Range / Performance

S5JB0A1104077

Wiring Diagram

17 ABS warning lamp check

1) Connect connectors to all control modules 

communicating by CAN.

2) Turn ignition switch ON.

Is ABS warning lamp light up?

Substitute a known-
good ABS hydraulic unit 
/ control module 
assembly and recheck.

Substitute a known-
good ECM and recheck.

Step

Action

Yes

No

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

12V

5V

BLU/BLK

BLU/BLK

BLK/RED

1

2

BLK/RED

BLK/RED

BLU

E23-1  

E23-60  

C37-15  

C37-29  
C37-48  

BLK/ORN

C37-58  

BLU/ORN

GRN

BLU/RED

BLU/YEL

BLU/RED

E23-16  

E23-50  

E23-17  

C37-45  

C37-44  

1-1

1-2

1-3

3

4

5

8

6

7

10

9

E23-29  

BLK/YEL

BLK/WHT

WHT/GRN

C37-30  BLK/ORN

BLK/YEL
BLK/YEL
BLK/YEL

BLU/BLK

BLU/BLK

WHT

BLK

RED

GRN

C37-53  

C37-54  

C37-40  

C37-41  

I5JB0A110069-01

1. Electric throttle body assembly

3. ECM

8. “IGN” fuse

1-1. Throttle actuator

4. Main relay

9. “IG COIL” fuse

1-2. Throttle position sensor (main)

5. Fuse box No.2

10.  Ignition switch

1-3. Throttle position sensor (sub)

6. “THR MOT” fuse

2. Throttle actuator control relay

7. “FI” fuse

Engine General Information and Diagnosis:  1A-190

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) Keep the accelerator pedal at idle position for 2 seconds.
4) Keep the accelerator pedal at fully depressed position for 2 seconds.
5) Repeat Step 3) and 4) for 3 times.
6) Check 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

Monitor signal of throttle actuator output (duty output) is 
inconsistent with throttle actuator control command.
(1 driving detection logic)

• Throttle actuator circuit
• Electric throttle body assembly
• 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

Throttle actuator circuit check
1) Disconnect connectors from electric throttle body 

assembly and ECM with ignition switch turned OFF.

2) Check for proper connection of electric throttle body 

assembly and ECM connectors at “BLU/YEL” wire, 
“BLU/RED” wire, “C37-45” and “C37-44” terminals.

For J20 engine

For M16 engine

3) Turn ON ignition switch.
4) Measure voltage between “BLU/YEL” wire terminal of 

electric throttle body assembly connector and engine 
ground, between “BLU/RED” wire terminal of electric 
throttle body assembly connector and engine ground.

Is voltage 0 V?

Go to Step 3.

“BLU/YEL” wire and/or 
“BLU/RED” wire is 
shorted to power circuit.

"BLK"

"WHT"

"RED"

"GRN"

"BLU/YEL"

"BLU/RED"

I5JB0A110042-01

"BLU/RED"

"BLU/YEL"

"GRN"

"RED"

"WHT"

"BLK"

I5JB0A110043-01

1A-191 Engine General Information and Diagnosis: 

DTC P2102: Throttle Actuator Control Motor Circuit Low

S5JB0A1104078

Wiring Diagram
Refer to “DTC P2101: Throttle Actuator Control Motor Circuit Range / Performance”.

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 for 1 min. or more.
4) Check DTC.

3

Throttle actuator circuit check
1) Turn OFF ignition switch.
2) Measure resistance between “BLU/YEL” wire terminal of 

electric throttle body assembly connector and engine 
ground, between “BLU/RED” wire terminal of electric 
throttle body assembly connector and engine ground.

Is resistance infinity?

Go to Step 4.

“BLU/YEL” wire and/or 
“BLU/RED” wire is 
shorted to ground 
circuit.

4

Throttle actuator circuit check
1) Check throttle actuator referring to “Throttle Actuator 

(Motor) Check” under “Electric Throttle Body Assembly 
On-Vehicle Inspection in Section 1C”.

Is check result satisfactory?

Substitute a known-
good ECM and recheck.

Replace electric throttle 
body assembly.

Step

Action

Yes

No

DTC detecting condition

Trouble area

Power supply voltage of throttle actuator control circuit is 
less than 5 V for specified time even if throttle actuator 
control relay is turned on.
(1 driving detection logic)

• Throttle actuator control relay circuit
• Throttle actuator control relay
• ECM

Engine General Information and Diagnosis:  1A-192

DTC Troubleshooting

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

 

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

Throttle actuator control relay circuit check
1) Remove ECM from its bracket with ECM connectors 

connected.

2) Check for proper connection of ECM connector at “E23-

50” and “E23-17” terminals.

3) Turn ON ignition switch.
4) Measure voltage between “E23-17” terminal of ECM 

connector and engine ground.

Is voltage 10 – 14 V?

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

Go to Step 3.

3

Is “THR MOT” fuse in good condition?

Go to Step 4

Replace fuse and check 
for short in circuits 
connected to this fuse.

4

Throttle actuator control relay circuit check
1) Remove throttle actuator control relay from relay box 

with ignition switch turned OFF.

2) Check for proper connection to throttle actuator control 

relay at “BLU/BLK”, “BLU/RED”, “BLU/ORN” and “GRN” 
wire terminals.

3) Measure voltage between engine ground and each 

“BLU/BLK”, “BLU/RED” wire terminal with ignition switch 
turned ON.

Is each voltage 10 – 14 V?

Go to Step 5

“BLU/BLK” wire and/or 
“BLU/RED” wire is open 
or high resistance.

5

Throttle actuator control relay circuit check
1) Disconnect connectors from ECM with ignition switch 

turned OFF.

2) Measure resistance at following connector terminals.

• Between “BLU/ORN” wire terminal of throttle actuator 

control relay connector and “E23-50” terminal of ECM 
connector

• Between “GRN” wire terminal of throttle actuator 

control relay connector and “E23-17” terminal of ECM 
connector

Is each resistance below 3 

Ω

?

Go to Step 6.

“BLU/ORN” wire and/or 
“GRN” wire is open or 
high resistance.

6

Throttle actuator control relay check
1) Check throttle actuator control relay referring to “Control 

Relay Inspection in Section 1C”.

Is it in good condition?

Substitute a known-
good ECM and recheck.

Replace throttle 
actuator control relay.