Suzuki Grand Vitara JB627. Manual - part 18

1A-21 Engine General Information and Diagnosis: 

C37-57

Ignition coil No.1 output

C37-58

Ground for ECM

C37-59

Ground for ECM

C37-60

—

C37-61

—

C37-62

—

C37-63

—

C37-64

Ground for throttle position sensor

C37-65

Throttle position sensor signal (sub)

C37-66

CMP sensor signal

C37-67

Ground for MAP sensor (if equipped), A/C refrigerant pressure sensor (if equipped), ECT sensor, IAT 
sensor and HOS2 (if equipped)

C37-68

MAP sensor signal (if equipped)

C37-69

—

C37-70

—

C37-71

—

C37-72

—

C37-73

Ground for ECM

C37-74

Ignition coil No.6 output

C37-75

Ignition coil No.4 output

C37-76

Ignition coil No.2 output

C37-77

Heater output of A/F sensor (Bank-1)

C37-78

Heater output of A/F sensor (Bank-2)

C37-79

Ground for A/F sensor heater

C37-80

Ground for ECM

C37-81

Ground for ECM

Terminal

Circuit

Engine General Information and Diagnosis:  1A-22

ECM connector “E23”

Terminal

Circuit

E23-1

Power source for ECM internal memory

E23-2

Main power supply

E23-3

Main power supply

E23-4

Output of throttle actuator (+)

E23-5

Output of throttle actuator (–)

E23-6

Throttle actuator control relay output

E23-7

Power supply of throttle actuator drive circuit

E23-8

Ignition switch signal

E23-9

CAN communication line (active high signal)

E23-10

—

E23-11

Clock signal for immobilizer coil antenna (if equipped)

E23-12

—

E23-13

—

E23-14

Radiator cooling fan relay No.3 output

E23-15

Radiator cooling fan relay No.1 output

E23-16

Main power supply relay output

E23-17

CAN communication line (active low signal)

E23-18

—

E23-19

Serial communication line for immobilizer coil antenna (if equipped)

E23-20

—

E23-21

—

E23-22

—

E23-23

Radiator cooling fan relay No.2 output

E23-24

Fuel pump relay output

E23-25

Output for 5 V power source of APP sensor (main)

E23-26

APP sensor signal (main)

E23-27

Ground for APP sensor (main)

E23-28

Fuel level sensor signal

E23-29

Serial communication line of DLC

E23-30

Brake light switch signal

E23-31

Cruise control main switch signal (if equipped)

E23-32

Brake pedal position switch signal for cruise control system (if equipped)

E23-33

Output for 5 V power source of APP sensor (sub)

E23-34

APP sensor signal (sub)

E23-35

Ground for APP sensor (sub)

E23-36

—

E23-37

A/C compressor relay output (if equipped)

E23-38

Ground for cruise control command switch (if equipped)

E23-39

Cruise control command switch signal (if equipped)

E23-40

Clutch pedal position switch signal for cruise control system (if equipped)

1A-23 Engine General Information and Diagnosis: 

Component Location

Electronic Control System Location

S6JB0B1103001

11

11-1

C

e

n

B

o

f

k

l

15

3

14

I

E

c

m

i

j

J

A

D

K

13

8

g

6

b

5

4

12

d

2

16

10

5

6

7

G

F

1

9

h

a

h

H

7

I5JB0C110005-01

Engine General Information and Diagnosis:  1A-24

Diagnostic Information and Procedures

Engine and Emission Control System Check

S6JB0B1104001

Numbers of each step correspond to the numbers of the items after this table.
Refer to the following items for the detail of each step.

Information sensors

Control devices

Others

1. MAF and IAT sensor

a: Fuel injector

A: ECM

2. Electric throttle body assembly (built-in 

throttle position sensor and throttle actuator)

b: EVAP canister purge valve

B: Combination meter

3. Brake light switch

c: Fuel pump relay

C: EVAP canister

4. ECT sensor

d: EGR valve (if equipped)

D: ABS or ESP

® control module

5. A/F sensor (sensor-1)

e: Malfunction indicator lamp

E: Data link connector

6. HO2S (sensor-2) (if equipped)

f: Radiator cooling fan relay No.1

F: 4WD control module

7. Battery

g: IMT vacuum solenoid valve

G: TCM (A/T model)

8. CMP sensor

h: Ignition coil assembly (with ignitor)

H: BCM

9. MAP sensor (if equipped)

i: Main relay

I: Immobilizer coil antenna (if equipped)

10. CKP sensor

j: Integration relay No.2 (built-in HO2S heater relay, 

compressor relay and A/T relay)

J: Fuse box No.2

11. Main fuel level sensor

k: Radiator cooling fan relay No.2

K: A/C refrigerant pressure sensor (if equipped)

11-1. Sub fuel level sensor

l: Radiator cooling fan relay No.3

12. Knock sensor

m: Starting motor control relay

13. Power steering pump pressure switch

n: Immobilizer indicator light (if equipped)

14. Accelerator pedal position (APP) sensor

o: Throttle actuator control relay

15. Rear wheel speed sensor (RH, LH) (VSS)
16. Transmission range sensor

Step

Action

Yes

No

1

)

 Customer complaint analysis

1) Perform customer complaint analysis.

Was customer complaint analysis performed?

Go to Step 2.

Perform customer 
complaint analysis.

2

)

 DTC / freeze frame data check, record and clearance

1) Check DTC (including pending DTC) referring to “DTC 

Check”.

Is there any malfunction DTC?

Print DTC and freeze 
frame data or write them 
down and clear them by 
referring to “DTC 
Clearance”, and go to 
Step 3.

Go to Step 4.

3

)

 Visual inspection

1) Perform visual inspection referring to “Visual inspection”.

Is there any faulty condition?

Repair or replace 
malfunction part and go 
to Step 11.

Go to Step 5.

4

)

 Visual inspection

1) Perform visual inspection referring “Visual inspection”.

Is there any faulty condition?

Repair or replace 
malfunction part and go 
to Step 11.

Go to Step 8.

5

)

 Trouble symptom confirmation

1) Confirm trouble symptom based on customer complaint 

analysis, DTC / freeze frame data in Step 1.

Is trouble symptom identified?

Go to Step 6.

Go to Step 7.

6

)

 Rechecking and record of DTC / freeze frame data

1) Recheck DTC / freeze frame data.

Is there any malfunction DTC?

Go to Step 9.

Go to Step 8.

7

)

 Rechecking and record of DTC / freeze frame data

1) Recheck DTC / freeze frame data.

Is there any malfunction DTC?

Go to Step 9.

Go to Step 10.