AUDIO UNIT
AUDIO UNIT : Diagnosis Procedure
Regarding Wiring Diagram information, refer to AV "Wiring Diagram".
1.CHECK FUSES
Check that the following fuses are not blown. 
Are the fuses blown?
YES >> Replace the blown fuse after repairing the affected circuit.
NO >> GO TO 2.
2.POWER SUPPLY CIRCUIT CHECK
1. Turn ignition switch OFF.
2. Disconnect audio unit connector M43.
3. Check voltage between audio unit connector M43 and ground. 
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace harness or connectors.
3.GROUND CIRCUIT CHECK
Inspect audio unit case ground.
Is the inspection result normal?
YES >> Inspection End.
NO >> Repair audio unit case ground.
Diagnosis and repair workflowWork Flow OVERALL SEQUENCE DETAILED FLOW 1.GET INFORMATION FOR SYMPTOM Get detailed information from the customer about the symptom (the condition and the environment when the incident/ma ...

Diagnosis Procedure Regarding Wiring Diagram information, refer to AV "Wiring Diagram". 1.CONNECTOR CHECK Check the audio unit and speaker connectors for the following: Proper conne ...
Exhaust valve timing control
Exhaust valve timing control : system diagram
Exhaust valve timing control : system description
INPUT/OUTPUT SIGNAL CHART
Sensor
Input signal to ECM
ECM function
Actuator
Crankshaft position sensor (POS)
Engine speed*1
Piston position
Exhaust valve timing c ...
P0506 ISC system
Description
The ECM controls the engine idle speed to a specified level through the fine
adjustment of the air, which is let
into the intake manifold, by operating the electric throttle control actuator.
The operating of the throttle valve is
varied to allow for optimum control of the engine ...