Electric Load Sensor: Testing and Inspection
INSPECTION1. Turn ignition and electrical consumers off.
2. Remove under hood fuse/relay box and remove lower cover.
3. Disconnect the three pin connector at the Electrical Load Detector (ELD). Turn ignition switch on.
Electrical Load Detector (ELD) Connector Terminal Identification:
4. Measure voltage between BLACK/YELLOW (+) terminal and BLACK (-) terminal. Voltage should read battery voltage. (If not repair open in BLACK/YELLOW (+) wire or BLACK (-) wire).
Electrical Load Detector (ELD) Connector Terminal Identification:
5. Measure voltage between GREEN/BLACK terminal and BLACK (-) terminal. voltage should read approx. 5.0 volts. (If not, inspect GREEN/BLACK wire at the three pin connector and PGM-GI ECM terminal D10. IF wire OK, substitute known good Programmed Fuel Injection Electronic Control Module (PGM-FI ECM)).
6. Turn ignition off. Reconnect three pin connector. Install Test Harness between PGM-FI ECM and connectors.
7. Start engine and run at Idle.
PGM-FI ECM Connector Description And Wire Location:
8. Measure voltage between D10 (+) terminal and A26 (-) terminal. While measuring, turn headlight switch to second position (low). Voltage should drop when headlights turned on. If not, replace the ELD.
9. If voltage drops but DTC indication or symptom still exist substitute known good PGM-FI ECM.