DTC DETECTION LOGIC 
DTC CONFIRMATION PROCEDURE
1.CHECK SELF DIAGNOSTIC RESULT
With CONSULT.
Is DTC C1121, C1123, C1125 or C1127 detected?
YES >> Proceed to diagnosis procedure. Refer to BRC "Diagnosis Procedure".
NO >> Inspection End.
Regarding Wiring Diagram information, refer to BRC "Wiring Diagram".
1.CONNECTOR INSPECTION
Is the inspection result normal?
YES >> GO TO 2
NO >> Repair or replace as necessary.
2.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) BATTERY POWER SUPPLY
Check voltage between ABS actuator and electric unit (control unit) connector
E33 terminal 25 and ground. 
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace malfunctioning components.
3.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUIT
Check continuity between ABS actuator and electric unit (control unit)
connector E33 terminals 13, 38 and
ground. 
Is the inspection result normal?
YES >> Replace ABS actuator and electric unit (control unit). Refer to BRC "Removal and Installation".
NO >> Repair or replace malfunctioning components.
Engine control system
ENGINE CONTROL SYSTEM : System Diagram
NOTE:
Battery current sensor is used in CVT models.
ENGINE CONTROL SYSTEM : System Description
ECM performs various controls such as fuel injection control and ignition
timing control.
ENGINE CONTROL SYSTEM : Fail Safe
NON DTC RELATED ITEM
...
Intake valve timing control
Intake valve timing control : System Diagram
Intake 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
Intake valve timing
con ...