Lexus ES: Steering Angle Sensor Supply Voltage Circuit Circuit Short to Ground or Open (C14FE14)
DESCRIPTION
This DTC is stored when the skid control ECU (brake actuator assembly) receives a +B line open signal from the steering angle sensor.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C14FE14 | Steering Angle Sensor Supply Voltage Circuit Circuit Short to Ground or Open | With the +BS terminal voltage between 9.6 and 16.5 V, a steering angle sensor power supply circuit malfunction signal is received from the steering angle sensor. |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE
| 1. | CLEAR DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Operate the Techstream to clear the codes. Enter the following menus: Chassis / Brake/EPB / Trouble Codes.
Chassis > Brake/EPB > Clear DTCs(d) Press the DTC clear button.
|
| 2. | RECONFIRM DTC |
(a) Connect the Techstream to the DLC3.
(b) Start the engine.
(c) Perform a road test under the same malfunction conditions recreated based on the Freeze Frame Data or customer problem analysis.
(d) Read the DTCs following the prompts on the Techstream. Enter the following menus: Chassis / Brake/EPB / Trouble Codes.
Chassis > Brake/EPB > Trouble Codes(e) Check if the same DTC is output.
| Result | Proceed to |
|---|---|
| C14FE14 is not output | A |
| C14FE14 is output | B |
| A |  | USE SIMULATION METHOD TO CHECK |
|
| 3. | CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL) |
| (a) Remove the steering wheel and column cover. |
|
(b) Make sure that there is no looseness at the locking part and the connecting part of the connector.
OK:
The connector is securely connected.
(c) Disconnect the G62 steering angle sensor connector.
(d) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(e) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| G62-4 (BAT) - Body ground | Always | 11 to 14 V |
| OK | | REPLACE STEERING ANGLE SENSOR |
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| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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Inspection
INSPECTION PROCEDURE 1. INSPECT FUEL PUMP (a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Specified Condition U - V 0.05 to 3.0 Ω V - W 0.05 to 3.0 Ω U - W 0.05 to 3.0 Ω If the result is not as specified
On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT FRONT LOWER BALL JOINT ASSEMBLY (a) Check for looseness. (1) Lift up the vehicle. (2) Move the front lower No. 1 suspension arm sub-assembly up and down by hand with a force of 294 N (30 kgf) or more to check that there is no looseness at the front lower
