Vehicle Speed Signal Circuit

AUDIO / VISUAL: AUDIO AND VISUAL SYSTEM (W/O Multi-display): Vehicle Speed Signal Circuit

Vehicle Speed Signal Circuit

DESCRIPTION

The circuit is necessary for ASL (Automatic Sound Levelizer). Speed signals are received from the combination meter and used for the ASL.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT COMBINATION METER (SPEEDOMETER)
(a) Drive the vehicle and check that the function of the speedometer on the combination meter is normal.
OK:
Actual vehicle speed and the speed indicated on the speedometer are the same.
NG -- GO TO METER / GAUGE SYSTEM
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (COMBINATION METER - STEREO COMPONENT AMPLIFIER)




(a) Disconnect the L10 meter connector.
(b) Disconnect the R34 amplifier connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- PROCEED TO NEXT INSPECTION PROCEDURE SHOWN IN PROBLEM SYMPTOMS TABLE