STEP 2. Voltage measurement at the EPS-ECU connector (IG1, +BB, GND terminal)
(1) Measure the EPS-ECU voltage without disconnecting the connector (by backprobing).
(2) Turn the ignition switch from the "LOCK" (OFF) position to the "ON" position.
(3) Measure the voltage between the EPS-ECU connector (IG1 terminal) and the EPS-ECU connector (GND terminal) or body ground.OK: The voltage should measure approximately 12 volts (battery positive voltage).
(4) Measure the voltage between the EPS-ECU connector (+BB terminal) and the EPS-ECU connector (GND terminal) or body ground.OK: The voltage should measure approximately 12 volts (battery positive voltage).
Is the check result normal?
Go to Step 5. Go to Step 3.