Code No. C1514:
Abnormal torque sensor power supply
caution
Before replacing ECU, ensure that the communication
circuit is normal.
DIAGNOSIS CODE SET CONDITIONS
The torque sensor power supply monitor voltage does not meet a predetermined
voltage stored in the microcomputer, and the microcomputer determines that there is a problem
in the torque power supply voltage.
CRITERIA FOR JUDGING MALFUNCTION
The power supply voltage exceeds 5.5 V or less than 4.5
V.
PROBABLE CAUSES
Defective harness wire(s) or connector(s)
Defective torque sensor of the steering gear and linkage assembly
The EPS-ECU is defective.
DIAGNOSIS PROCEDURE
STEP 1. Wiring harness check between B-114-2 EPS-ECU connector
terminal No. 1, 2, 3 and the torque sensor
Q.
Is the check result normal?
Go to Step 2.
Repair the wiring harness.
STEP 2. Measure the resistance at B-114-2 EPS-ECU connector.
(1)Disconnect the connector, and measure at the ECU side.
(2)Measure the resistance between B-114-2 EPS-ECU connector terminal No. 3 and No.
4. OK: 400 to 800 Ω
Q.
Is the check result normal?
Go to Step 3..
Replace EPS-ECU.
STEP 3. Measure the resistance at B-114-2 EPS-ECU connector.
(1)Disconnect the connector and measure at the wiring harness side.
(2)Measure the resistance between B-114-2 EPS-ECU connector terminal No. 4 and the
body earth. OK: Continuity exists. (100 Ω or more)
(3)Measure the resistance between B-114-2 EPS-ECU connector terminal No. 3 and No.
4. OK: Continuity exists. (100 Ω or more)
Q.
Is the check result normal?
Go to Step 4.
Replace the steering gear & linkage assembly.
STEP 4. Diagnosis code recheck
Recheck if the diagnosis code is set.
(1)Turn the electric motor switch to the "LOCK" (OFF) → "ON" position.
(2)Check if the diagnosis code No. C1514 is set as a current trouble.
Q.
Is diagnosis code C1514 set?
Replace EPS-ECU.
Intermittent malfunction. (Refer to GROUP 00 - How to Cope with Intermittent
Malfunction .)
)
)
)
Go to Step 2.
Repair the wiring harness.
.)