DTC Description

IPDM E/R operates the ignition relay when it receives an ignition ON signal from BCM via CAN communication.
Turn the ignition relay OFF by pressing the push-button ignition switch once when the vehicle speed is 4 km/h (2.5 MPH) or less.
Turn the ignition relay OFF with the following operation when the vehicle speed is more than 4 km/h (2.5 MPH) or when an abnormal condition occurs in CAN communication from the ABS actuator and electric unit (control unit) (Emergency OFF)
- Press and hold the push-button ignition switch for 2 seconds or more.
- Press the push-button ignition switch 3 times within 1.5 seconds.

note	The ignition relay does not turn ON for 3 seconds after emergency OFF even if the push-button ignition switch is pressed.

DTC DETECTION LOGIC

DTC No.	M.U.T.-III SE screen items (Trouble diagnosis content)		DTC detection condition
B20DD-73	IGN RELAY ON CIRC (Ignition relay on circuit)	[ACTUATOR STUCK CLOSED]	Diagnosis condition	When ignition switch is OFF
			Signal (terminal)	CPU monitors the status at the contact and excitation coil circuits of the ignition relay inside it
			Threshold	The ignition relay ON is detected
			Diagnosis delay time	1 second or more

POSSIBLE CAUSE

IPDM E/R

FAIL-SAFE

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DTC CONFIRMATION PROCEDURE

1.PERFORM DTC CONFIRMATION PROCEDURE

With M.U.T.-III SE

Is DTC detected?

-1 To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident

-2 Confirmation after repair: INSPECTION END