ECM Control Relay (Accent & ELANTRA)
WARNING: This page is about a different car, the 2002 Hyundai XG350, 2002 Hyundai Sonata, 2002 Hyundai Santa Fe, 2002 Hyundai Elantra, and 2002 Hyundai Accent. However, it is still accessible from the selected car via links, so may be relevant.
- Turn ignition off. Disconnect ECM control relay harness connector and remove relay. On Accent, relay is mounted behind dash above left front kick panel. On Elantra, relay is located left of steering column, behind dash. Check for continuity between relay terminals No. 2 and 4. See Fig 1. If continuity is present, go to next step. If continuity is not present, replace ECM control relay.
- Using a fused jumper wire, apply battery voltage to relay terminal No. 4. Using another jumper wire, connect relay terminal No. 2 to ground. Check for continuity between relay terminals No. 1 and 5, and between terminals No. 3 and 5. If continuity is present, go to next step. If continuity is not present, replace ECM control relay.
- Remove battery voltage and ground from ECM control relay. Check for continuity between relay terminals No. 1 and 5, and between terminals No. 3 and 5. If continuity is not present, go to next step. If continuity is present, replace ECM control relay. See appropriate wiring diagram under ENGINE PERFORMANCE in WIRING DIAGRAMS. Repair as necessary.
- Turn ignition off. On Accent, measure voltage between ground and ECM control relay 5-pin harness connector terminals No. 2 (Orange wire) and 5 (Red wire). On Elantra, measure voltage between ground and ECM control relay harness connector terminals No. 2 (Red wire) and No. 5 (Red wire). On all models, if battery voltage is present, go to next step. If battery voltage is not present, repair open or short between relay and ECM FUSIBLE LINK (20-amp) located in engine compartment relay and fuse box.
- Remove ECM FUSIBLE LINK (20-amp) located in engine compartment relay and fuse box. Check continuity across fusible link. If continuity is present, reinstall fusible link. If continuity is not present, replace fusible link and retest.