Diagnostic Procedure

Disconnect ABS control relay connector A8, located in engine compartment at front of vehicle. See Figure. Measure voltage between ground and motor relay connector terminal A8-1. See Fig 1. If voltage is 10-14 volts, go to next step. If voltage is not 10-14 volts, repair wiring harness between battery and motor relay. See WIRING DIAGRAMS .
Disconnect 2 ABS actuator connectors. Check for continuity on Blue/Red wire between ABS actuator connector terminal A7-2 and ABS control relay connector terminal A8-2. Also check for continuity on Blue/Red wire between ABS actuator connector terminal A7-3 and ABS ECU connector terminal A16-10. See Fig 1. Continuity should exist. If continuity is not present on either wire, repair open circuit on affected wire between ABS control relay and ABS ECU. If continuity is present on both wires, go to next step.
Check resistance between ABS actuator terminals A7-2 and A7-3. Resistance should be 26-40 ohms. If resistance is as specified, go to next step. If resistance is not as specified, replace ABS actuator.
Check ABS control relay. See MOTOR RELAY SECTION under ABS CONTROL RELAY under COMPONENT TESTS. Replace relay as necessary. If relay tests okay, go to next step.
Check for open or short circuit in wiring harness between ABS control relay and ABS ECU. Repair as necessary. See WIRING DIAGRAMS . If circuit is okay, go to next step.
Clear DTCs and then recheck for DTCs. See RETRIEVING DTCS under DIAGNOSIS & TESTING. If same DTC is output after DTC is cleared, check contact condition of each connection. Repair as necessary. If connections are okay, replace ABS ECU.

Fig 1: Testing Circuit Between ABS ECU & ABS Control (Motor) Relay