IS 250 AWD V6-2.5L (4GR-FSE) (2006)
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Tachometer: Symptom Related Diagnostic Procedures
Tachometer Malfunction
DESCRIPTION
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The meter CPU receives engine speed signals from the ECM in this circuit.
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The ECM transmits engine speed signals as pulses to the meter CPU.
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The meter CPU calculates the engine speed converting 3 pulses to 1 revolution.
Wiring Diagram
Step 4
