Transmission Control System

DTC P0500 Vehicle Speed Sensor "A"

CIRCUIT DESCRIPTION

DTC Detection Condition:

The vehicle speed sensor outputs a 4-pulse signal for every revolution of the rotor shaft, which is rotated by the transmission output shaft via the driven gear. After this signal is converted into a more precise rectangular wave form by the wave form shaping circuit inside the combination meter, it is then transmitted to the ECM. The ECM determines the vehicle speed based on the frequency of these pulse signals.

MONITOR DESCRIPTION

Monitor Strategy:

Typical Enabling Conditions:

Typical Malfunction Thresholds:

The ECM detects vehicle speed as pulse signal using a vehicle speed sensor.

The transmission output shaft speed (NC) sensor built into the transmission detects vehicles speed signals (puls signals). These signals are sent to the ECM via the combination meter.

If the ECM does not detect any vehicle speed signals while the vehicle is being driven, the ECM interprets it as a malfunction in the vehicle speed sensor circuit and sets a DTC.

Wiring Diagram:

Step 1 - 2:

Step 3:

INSPECTION PROCEDURE