Vehicle Speed Sensor MTR

DTC VEHICLE SPEED SENSOR-MTR







Description
The vehicle speed sensor-MTR is built into the unified meter control unit. The sensor functions as an auxiliary device to the revolution sensor when it is malfunctioning. The TCM will then use a signal sent from the vehicle speed sensor-MTR.

TCM TERMINALS AND REFERENCE VALUE:

ON BOARD DIAGNOSIS:

DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE

CAUTION: Always drive vehicle at a safe speed.
If conducting this "DTC CONFIRMATION PROCEDURE" again, always turn ignition switch OFF and wait at least 5 seconds before continuing.

After the repair, perform the following procedure to confirm the malfunction is eliminated.











With CONSULT-II
1. Turn ignition switch ON and select "DATA MONITOR" mode for "A/T" with CONSULT-II.
2. Start engine and accelerate vehicle from 0 to 25 km/h (0 to 6 MPH).


Without CONSULT-II
1. Start engine.
2. Drive vehicle under the following conditions:
Selector lever in D position and vehicle speed higher than 25 km/h (16 MPH).







3. Perform self-diagnosis.
Refer to "Displaying & Reading Trouble Codes / Without Scan Tool / TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)".
Without Scan Tool

AT - VSSMTR:

Diagnostic Procedure
1. CHECK INPUT SIGNAL.







With CONSULT-II
1. Start engine.
2. Select "TCM INPUT SIGNALS" in "DATA MONITOR" mode for "A/T" with CONSULT-II.
3. Read out the value of "VHCL/S SE-MTR" while driving.
Check the value changes according to driving speed.


Without CONSULT-II
1. Start engine.







2. Check voltage between TCM connector M78 terminal 40 and ground while driving at 2 to 3 km/h (1 to 2 MPH) for 1 m (3 ft) or more.

Does battery voltage vary between less than 1V and more than 4.5V?

Yes >> GO TO 2.

No >> Check the following items:
- Vehicle speed sensor and ground circuit for vehicle speed sensor.
- Harness for short or open between TCM and vehicle speed sensor (Main harness)

2. CHECK DTC
Perform "DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE".

OK or NG?

OK >> INSPECTION END.

NG >>
1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.