Dtc B1133 (No. 1133): Battery Voltage Too High - Suzuki Grand Vitara 2011 Manual

Step
4 Ground circuit check
1) Turn ignition switch to OFF position.
2) Check for proper connection to BCM connector at
terminals "G30-12" and "G32-1".
3) If OK, then measure resistance between following
terminals.
• Between "G30-12" terminal of BCM connector and
vehicle body ground
• Between "G32-1" terminal of BCM connector and
vehicle body ground
Is each resistance 2

DTC B1133 (No. 1133): Battery Voltage Too High

Wiring Diagram
Refer to "BCM Power Circuit and Ground Circuit Check".
DTC Detecting Condition and Possible Cause
DTC detecting condition
Power voltage supplied from battery to BCM is
higher than 16V.
Flow Test Description
Step 1: Check charging system
DTC Troubleshooting
Step
1 Charging system operation check
1) Check generator for operation referring to "Generator
Test (Overcharged Battery Check): For Petrol Engine
Model in Section 1J" or "Generator Test (Overcharged
Battery Check): For Diesel Engine Model in Section 1J".
Is it in good condition?
Action
Ω
or less?
• Charging system malfunction
• BCM malfunction
Action
Body Electrical Control System:
Yes
BCM power supply
circuit and ground circuit
are in good condition.
Possible cause
Yes
Substitute a known-
good BCM and recheck.
10B-18
No
Repair ground circuit.
S6JB0AA204008
No
Repair charging system.