Honda P1298 Electric Load Detection Circuit
Honda Code P1298 load detection circuit.
2002 CR-V 2.4
2003 CR-V 2.4
2004 CR-V 2.4
Customer Concern: The check engine light is on. Trouble code P1298. This code is for the Electric Load Detection (ELD) circuit. The ELD unit is built into the under hood fuse box and works like an electronic Throttle Position Sensor (TPS) and monitors current flow so the Engine Control Module (ECM) can control the charging system.
Average Reported Mileage: 111827
Tests/Procedures: 1. Verify that the Black (BLK) wire is a ground. The Green/Yellow (GRN/YEL) wire has battery voltage and the Green/Red (GRN/RED) wire from the ECM should have 4.5 to 5 volts reference voltage, unplugged.
- With the connector plugged into the fuse box, and the vehicle running, as electrical loads are turned on, the voltage on the GRN/RED should drop. Normal voltage is 3 volts no load and 1.5 volts high load. If the voltage always stays at 4.5 volts, the ELD is not changing the voltage, so the ELD is faulty and will need to be replaced.
Tech Tips: Refer to Honda TSB #05-006. The ELD is now sold without the complete fuse box.
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