Vehicle Speed Signal Circuit Between Navigation ECU and Combination Meter

NAVIGATION SYSTEM: Vehicle Speed Signal Circuit between Navigation ECU and Combination Meter

Vehicle Speed Signal Circuit between Navigation ECU and Combination Meter

DESCRIPTION

This circuit sends a speed signal from the combination meter to the navigation ECU.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK OPERATION OF SPEEDOMETER
(a) Drive the vehicle and check if the function of the speedometer in the combination meter is normal.
OK:
Actual vehicle speed and the speed indicated on the speedometer are the same.
HINT: The vehicle speed sensor is functioning normally when the indication on the speedometer is normal.

NG -- GO TO METER / GAUGE SYSTEM
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (NAVIGATION ECU - COMBINATION METER)





(a) Disconnect the N8 ECU connector.
(b) Disconnect the C11 meter connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE NAVIGATION ECU