C1D18

Description

Power supply for E-SUS control unit.


DTC Logic


DTC DETECTION LOGIC







DTC REPRODUCTION PROCEDURE


1. DTC REPRODUCTION PROCEDURE

With CONSULT
1.Turn the ignition switch OFF to ON.
2.Perform "E-SUS" self-diagnosis.
Is DTC "C1D18" detected?
YES- Proceed to diagnosis procedure. .
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
1.Connect the E-SUS control unit harness connector.
2.Start the engine.

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