Multi-Display Power Source Circuit

METER: METER / GAUGE SYSTEM: Multi-display Power Source Circuit

Multi-display Power Source Circuit

DESCRIPTION

Confirm that the speedometer, the tachometer, the fuel receiver gauge and SFI system are normal, then check this circuit.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT COMBINATION METER ASSEMBLY (TAU-B)





(a) Remove the combination meter assembly.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
2. INSPECT COMBINATION METER ASSEMBLY (TAU-G)
(a) Check the input signal waveform.





(1) Remove the combination meter assembly.
(2) Connect the oscilloscope to terminal C11-3 (TAU-G INPUT) and body ground.
(3) Start the engine.





(4) Check the signal waveform according to the condition(s) in the table below.





HINT: As the engine speed goes higher, the frequency becomes shorter.

NG -- GO TO ENGINE CONTROL SYSTEM
OK -- REPLACE COMBINATION METER ASSEMBLY