Inspection Procedure

CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - CERTIFICATION ECU)

Disconnect the D44 ECU connector.

Fig 1: Identifying D44 ECU Connector Terminal LIN1
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Disconnect the D39 ECU connector.

Fig 2: Disconnecting D39 ECU Connector

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Measure the resistance according to the value(s) in the table below.

Resistance

RESISTANCE SPECIFICATION

Terminal No. (Symbol)	Specified Condition
D44-30 (LIN1) - D39-10 (LIN)	Below 1 Ω
D44-30 (LIN1) - Body ground	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

CHECK POWER SOURCE CONTROL ECU OPERATION

After replacing power source control ECU with a normally functioning ECU, check that the engine starts.
OK:

Engine can start normally.

Result

RESULT

Condition	Proceed to
OK	A
NG (When troubleshooting according to the DTC B2287)	B
NG (When troubleshooting according to the DTC B2289)	C

B: REPLACE CERTIFICATION ECU

C: GO TO SMART KEY SYSTEM (MATCHING FOR THE INSIDE OF THE CABIN CANNOT BE PERFORMED) SMART KEY SYSTEM

A: END (POWER SOURCE CONTROL ECU DEFECTIVE)