Bcm Power Circuit And Ground Circuit Check - Suzuki GRAND VITARA Owner's Manual

10B-14 Body Electrical Control System:

BCM Power Circuit and Ground Circuit Check

Wiring Diagram
G30
12 11 10 9 8 7 6
24 23 22 21 20 19 18 17
G32
6 5 4 3 2
15 14 13 12 11 10 9
Troubleshooting
Step
1 Fuse check
1) Turn ignition switch to OFF position.
2) Check circuit fuses for condition.
Are circuit fuses in good condition?
2 Power supply circuit check
1) Disconnect connectors from BCM.
2) Check for proper connection to BCM connector at
terminal "G32-5".
3) If OK, then measure voltage between "G32-5" terminal of
BCM and vehicle body ground.
Is voltage 10 – 14 V?
3 Power supply circuit check
1) Check for proper connection to BCM connector at
terminals "G30-1" and "G30-2".
2) If OK, turn ignition switch ON.
3) Measure voltage between following terminals.
• Between "G30-1" terminal of BCM connector and
vehicle body ground
• Between "G30-2" terminal of BCM connector and
vehicle body ground
Is each voltage 10 – 14 V?
+B
2
3
5 4 3 2 1
16 15 14 13
1
8 7
1. BCM
2. Ignition switch
Action
1
RED/WHT G32-5
WHT/BLK G30-2
PPL/RED G30-1
BLK G32-1
G30-12
BLK
20 19 18 17 16 15
40 39 38 37 36 35
3. Battery
Go to Step 2.
Go to Step 3.
Go to Step 4.
IG1
G31
14 13 12 11 10 9 8 7 6 5 4 3
34 33 32 31 30 29 28 27 26 25 24 23
Yes
Replace fuse and check
for short circuit to
ground.
Repair power supply
circuit.
Repair power supply
circuit.
S5JB0AA204007
2 1
22 21
I5JB0AA20006-01
No