STEP 3. Voltage measurement at EPS-ECU connector (TSM, TSS, GND terminal).
(1) The steering is in the neutral position.
(2) Measure the EPS-ECU voltage without disconnecting the connector (by backprobing).
(3) Turn off the power supply mode of the electric motor switch.
(4) Turn on the power supply mode of the electric motor switch.
(5) Measure the voltage between the EPS-ECU connector (TSM terminal) and the EPS-ECU connector (GND terminal) or body ground. <main system>OK: 2.5 ± 0.05 V
(6) Measure the voltage between the EPS-ECU connector (TSS terminal) and the EPS-ECU connector (GND terminal) or body ground. <sub system>OK: 2.5 ± 0.05 V
Is the check result normal?
Go to Step 5. Go to Step 4.