P1808

P1808 Vehicle Speed Sensor (ABS)

Description

The ABS actuator and electric unit (control unit) transmits a vehicle speed signal via CAN communication to the transfer control unit. DTC P1808 sets when a malfunction is detected in the vehicle speed signal that is output from the ABS actuator and electric unit (control unit) or an improper signal is input while driving.

DTC Logic

DTC Detection Logic






DTC Confirmation Procedure

1. DTC CONFIRMATION PROCEDURE

1 Turn ignition switch ON.
2 Perform "DTC check".

Is DTC "P1808 displayed?
YES
Perform diagnosis procedure. Refer to "Diagnosis Procedure".
NO
Inspection End.

Diagnosis Procedure

1. CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

Perform "DTC check" with ABS actuator and electric unit (control unit) for specific BRC system type.

Is any malfunction detected by "DTC check"?
YES
Check the malfunctioning system.
NO
GO TO 2.

2. CHECK TRANSFER CONTROL UNIT

Check transfer control unit input/output signal. Refer to [Transfer Control Unit: Reference Value] .

Are the inspection results normal?
YES
GO TO 3.
NO
Check transfer control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.

3. CHECK DTC

Drive vehicle and then perform "DTC check".

Is DTC P1808 displayed?
YES
Perform "DTC check" with ABS actuator and electric unit (control unit) for specific BRC system type.
NO
Inspection End.