Malfunction Indicator Lamp Does Not Come On; Wiring Diagram; Circuit Description - Suzuki GRAND VITARA JB416 Service Manual

Malfunction Indicator Lamp Does Not Come ON with Ignition Switch ON and Engine Stop (but
Engine Can Be Started)

Wiring Diagram

RED
WHT
G28-13
BLK
4
G28-15
PPL/RED
8
6 5
BLK/YEL
2
WHT/GRN
BLK/RED
1
11 10
[A]
15 14 13 12 11 10 9
30 29 28 27 26 25 24 23
45 44 43 42 41 40 39 38
59
60 58 57 56 55 54 53
[A]: ECM connector (viewed from harness side)
[B]: Combination meter connector (viewed from harness side)
1. Fuse box No.2
2. Ignition switch
3. Main relay
4. Malfunction indicator lamp in combination meter
5. "IG COIL" fuse
6. "METER" fuse

Circuit Description

When the ignition switch is turned ON, ECM causes the main relay to turn ON (close the contact point). Then, ECM
being supplied with the main power, transmits indication ON signal of malfunction indicator lamp (MIL) to combination
meter in order to turn MIL ON. And then, combination meter turns MIL ON. When the engine starts to run and no
malfunction is detected in the system, ECM transmits MIL indication OFF signal to combination meter in order to turn
MIL OFF. And then, combination meter turns MIL OFF, but if a malfunction was or is detected, MIL remains ON even
when the engine is running.
12 12
RED
WHT
13
12
3
BLK/RED
BLK/RED
E23
8 7 6 5 4 3 2 1 15 14
22 21 20 19 18 17 16 30 29
37 36 35 34 33 32 31
45 44
59
52 51 50 49 48 47 46 60
Engine General Information and Diagnosis:
9
WHT/RED WHT/RED
WHT/BLU WHT/BLU
12
BLK/WHT
BLU
BLU/BLK BLU/BLK
BLU/BLK
C37
13 12 11 10 9 8 7 6 5 4
28 27 26 25 24 23 22 21 20 19
43 42 41 40 39 38 37 36 35 34
58 57 56 55 54 53 52 51 50 49
7. ECM
8. Junction block
9. ABS / ESP® control module
10. "FI" fuse
11. "IGN" fuse
12. CAN communication line
13. To other control module (TCM (for A/T model), BCM, 4WD control module (if
equipped), steering angle sensor (for vehicle with ESP®) and keyless start control
module (if equipped))
7
E23-4
E23-19
E23-29
C37-15 BLK/ORN
C37-30 BLK/ORN
C37-29
BLK/YEL
C37-48
BLK/YEL
E23-60
BLK/YEL
C37-58
12V 5V
E23-1
E23-16
[B]
G28
3 2 1
10 9 8 7 6
18 17 16
2221201918 17 1615141312
33 32 31
48 47 46
1A-25
S5JB0E1104011
5 4 3 2 1
11
I5JB0A110025-02