C1D18

C1D18 IGN POWER SUPPLY





Description
Power supply for E-SUS control unit.




DTC Logic

DTC DETECTION LOGIC

DTC Detection Logic:

DTC REPRODUCTION PROCEDURE
1.DTC REPRODUCTION PROCEDURE
With CONSULT-III
1. Turn the ignition switch OFF to ON.
2. Perform E-SUS control unit self-diagnosis.
Is DTC "C1D18" detected?
YES - Proceed to diagnosis procedure. Refer to C1D18.
NO - INSPECTION END




Diagnosis Procedure
1.CHECK E-SUS CONTROL UNIT GROUND
1. Turn the ignition switch OFF.
2. Disconnect the E-SUS control unit harness connector.
3. Check the continuity between the E-SUS control unit harness connector and ground.





Is the inspection result normal?
YES - GO TO 2.
NO - Repair or replace the malfunctioning harness or connector.
2.CHECK E-SUS CONTROL UNIT POWER SUPPLY CIRCUIT
1. Turn the ignition switch ON.

CAUTION:
Never start the engine.
2. Check the voltage between the E-SUS control unit harness connector and ground.





Is the measured value "9.0 V" or less?
YES - Check the following items, and repair or replace the malfunctioning parts.
- Open circuit in 10 A fuse (#16)
- Short circuit between the 10 A fuse (#16) connector and E-SUS control unit harness connector terminal 1, 17
- Battery or ignition switch
NO - GO TO 3.
3.CHECK TERMINAL
Check that there is no malfunction in the pin terminals and connection of the E-SUS control unit harness connector.
Is the inspection result normal?
YES - GO TO 4.
NO - Repair or replace the malfunctioning parts.
4.CHECK E-SUS CONTROL UNIT SIGNAL
With CONSULT-III
1. Connect the E-SUS control unit harness connector.
2. Start the engine.

CAUTION:
Always hold the vehicle stopped.
3. Check the value of "IGN" on "DATA MONITOR" screen for E-SUS control unit.
Is the value in "DATA MONITOR" "16 V" or more?
YES - Perform the diagnosis by symptom for the charging system. Refer to Symptom Related Diagnostic Procedures.
NO - Replace E-SUS control unit. Refer to Exploded View.