3C
DTC 43
DTC Detecting Condition and Trouble Area
DTC detecting condition Trouble area
43: Battery Voltage Abnormality
Voltage of terminal E74-3 became lower than 2V or higher than 18V.
• 4WD control module power supply circuit
• Charging system
• Battery
• 4WD control module
Wiring Diagram
[A]: 4WD control module connector (View: [a]) 2. Voltage converter 4. CPU
1. “4WD” fuse 3. 4WD control module      
DTC Confirmation Procedure
1) Turn ignition switch to ON position
2) Run engine, if possible.
DTC Troubleshooting
Step Action YES NO
1
4WD control module power supply circuit check
1) Disconnect 4WD control module connector with ignition switch OFF.
2) Measure voltage between “YEL/RED” wire terminal of 4WD control module connector and vehicle body ground with ignition switch turned ON.
Is voltage 10 – 14 V?
Substitute a known-good 4WD control module and recheck.
Go to Step 2.
2
“4WD” fuse check
1) Check “4WD” fuse.
Is it in good condition?
Go to Step 3.
Check 4WD control module power supply circuit (“YEL/RED” wire) for short to ground. If OK, replace “4WD” fuse.
3
4WD control module power supply circuit check
1) Check 4WD control module power supply circuit (“BLK/RED” wire) for open.
Is it in good condition?
Faulty of battery or charging system.
Repair or replace 4WD control module power supply circuit.