Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Overall Function Check
Use this procedure to check the overall function of the battery current sensor circuit. During this check, a 1st trip DTC might not be confirmed.
TESTING CONDITION:
- Before performing the following procedure, confirm that battery voltage is more than 12.8 V at idle .
- Before performing the following procedure, confirm that all load switches and A/C switch are turned OFF .
WITH CONSULT-III
- Start engine and let it idle.
- Select "BAT CUR SEN" in "DATA MONITOR" mode with CONSULT-III.
- Check "BAT CUR SEN" indication for 10 seconds.
"BAT CUR SEN" indication should be above 2, 300 mV at least once .
- If NG, go to "DIAGNOSIS PROCEDURE ".
WITH GST
- Start engine and let it idle.
- Check voltage between ECM terminal 71 (battery current sensor signal) and ground for 10 seconds.
The voltage should be above 2.3 V at least once .
- If NG, go to "DIAGNOSIS PROCEDURE ".
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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