Vehicle Speed Signal Circuit Between Navigation Receiver Assembly and Combination Meter
Vehicle Speed Signal Circuit between Navigation Receiver Assembly and Combination MeterDESCRIPTION
This circuit sends a speed signal from the combination meter to the navigation receiver.
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 its respective system based on the pulse signal.
- If a short occurs in any of the ECUs or in the wire harness connected to an ECU, both systems in the diagram given will not operate normally.
Wiring Diagram:
Step 1:
Step 2:
INSPECTION PROCEDURE