Speed Signal Circuit (Radio and Navigation Assy)

SPEED SIGNAL CIRCUIT (RADIO AND NAVIGATION ASSEMBLY)

CIRCUIT DESCRIPTION

The radio and navigation assembly receives a vehicle speed signal from the combination meter assembly and information about the GPS antenna, and then adjusts vehicle position.

The radio and navigation assembly performs the switch operation control during driving by receiving the vehicle speed signal.

HINT:
- A voltage of 12 V or 5 V is output from each ECU and then input to the combination meter. The signal is changed to a pulse signal at the transistor in the combination meter. Each ECU controls the respective system based on the pulse signal.
- If a short occurs in an ECU, all systems in the diagram will not operate normally.

Wiring Diagram:

Step 1 - 2:

Step 3:

Step 4:

INSPECTION PROCEDURE