Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.

CHECK HARNESS AND CONNECTOR (TERMINAL TC of DLC3 - ECM)

Disconnect the A27 connector from the ECM.

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

Standard Resistance

RESISTANCE REFERENCE

Tester Connection	Condition	Specified Condition
A27-16(TC) - H19-13 (TC)	Always	Below 1 Ω

Reconnect the ECM connector.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 1: Identifying A27 Connector Of ECM

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to Next Step

CHECK HARNESS AND CONNECTOR (TERMINAL CG of DLC3 - BODY GROUND)

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

Standard Resistance

RESISTANCE REFERENCE

Tester Connection	Condition	Specified Condition
H19-4 (CG) - Body ground	Always	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 2: Identifying H19 Connector Terminal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to Next Step

CHECK HARNESS AND CONNECTOR (TERMINAL TC of DLC3 - BODY GROUND)

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

Standard Resistance

RESISTANCE REFERENCE

Tester Connection	Condition	Specified Condition
H19-13(TC) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS, CONNECTOR, OR EACH ECU

Fig 3: Identifying H19 Connector Terminal

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )