STEP 1. Using scan tool (M.U.T.-IIISE), check the data list.
(1) caution | To prevent damage to scan tool (M.U.T.-IIISE), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-IIISE). |
Connect scan tool (M.U.T.-IIISE). Refer to "How to Connect the Scan Tool (M.U.T.-IIISE)
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(2) The steering is in the neutral position.
(3) Check the following data list (Refer to ).- Item No. 01: Torque sensor voltage1
- Item No. 02: Torque sensor voltage2
Is the check result normal?
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunctions ). Go to Step 2.
STEP 2. Voltage measurement at EPS-ECU connector (TRQ1, TRQ2, TRQG1, TRQG2 terminal)
(1) The steering is in the neutral position.
(2) Measure the EPS-ECU voltage without disconnecting the connector (by backprobing).
(3) Engine start
(4) Measure the voltage between the EPS-ECU connector (TRQ1 terminal) and the EPS-ECU connector (TRQG1 terminal) or body ground. <Torque sensor 1 system>OK: 2.5 ± 0.05 volts
(5) Measure the voltage between the EPS-ECU connector (TRQ2 terminal) and the EPS-ECU connector (TRQG2 terminal) or body ground. <Torque sensor 2 system>OK: 2.5 ± 0.05 volts
Is the check result normal?
Go to Step 4. Replace the steering column shaft assembly (Refer to ). Then go to Step 3.