P1510

DTC P1510: ECM Back-up Power Supply Malfunction

Wiring Diagram:

Circuit Description
Battery voltage is supplied so that diagnostic trouble code memory, values for engine control learned by ECM, etc. are kept in ECM even when the ignition switch is turned OFF.

DTC Detecting Condition and Trouble Area

DTC detecting condition Trouble area
Back-up circuit voltage is out of specification. Battery voltage supply circuit

DTC Confirmation Procedure

NOTE:
Check to make sure that the following conditions are satisfied when using this DTC confirmation procedure.
- Intake air temp.: -14 °C, 6.8 °F or higher
- Altitude (barometric pressure): 2020 m, 6650 ft or less (540 mmHg, 72 kPa or more)

1. Connect scan tool to DLC with ignition switch turned OFF.
2. Turn ON ignition switch and clear DTC using scan tool and run engine at idle speed for 1 min.
3. Check DTC and pending DTC.

Step 1 - 2:

DTC Troubleshooting