P1510

DTC P1510: ECM Back-Up Power Supply Malfunction

Wiring Diagram:

Wiring Diagram

Circuit Description
Battery voltage is translated to 5 V in ECM back-up circuit. The voltage is supplied to keep DTC memory, values that ECM has learned to control engine, etc. in ECM even when ignition switch is turned OFF.

DTC Detecting Condition And Trouble Area:

DTC Detecting Condition and Trouble Area

DTC Confirmation Procedure
1. With ignition switch OFF, connect scan tool.
2. Turn ON ignition switch and clear DTC by using scan tool if any.
3. Start engine and run it for 10 sec.
4. Check DTC by using scan tool.

Step 1-2:

DTC Troubleshooting

NOTE: Before this trouble shooting is performed, read the precautions for DTC troubleshooting referring to Precautions for DTC Troubleshooting.