DTC Detection Logic

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detected condition

C13A9-00

BACK UP CIRCUIT

(Back up circuit)

Diagnosis condition

When engine running.

Signal (terminal)

--

Threshold

The signal voltage of back up circuit is in the following condition:

• Terminal voltage < 0.5 V
• 4.75 V < Terminal voltage

Diagnosis delay time

1 second or more continuously