Inspection Procedure: Procedure

WARNING: This page is about a different car, the 2011 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR OPEN IN CAN NO. 1 BUS WIRE (COMBINATION METER MAIN BUS WIRE)

Turn the ignition switch off.

Fig 1: E46 Connector Terminal Identification

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

TEXT IN ILLUSTRATION

*a	Front view of wire harness connector (to Combination Meter)

Disconnect the combination meter connector.

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

Standard Resistance

Tester Connection	Switch Condition	Specified Condition
E46-27 (CANH) - E46-28 (CANL)	Ignition switch off	108 to 132 Ω

NG → REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (COMBINATION METER MAIN BUS WIRE)

OK: Go to next step

CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)

Disconnect the combination meter connector.

Fig 2: Combination Meter Connector Terminal Identification

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

TEXT IN ILLUSTRATION

*a	Front view of wire harness connector (to Combination Meter)

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

Standard Resistance

Tester Connection	Condition	Specified Condition
E46-30 (ET) - Body ground	Always	Below 1 Ω

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

Standard Voltage

Tester Connection	Condition	Specified Condition
E46-33 (IG+) - Body ground	Ignition switch ON	10 to 14 V
E46-32 (B) - Body ground	Always	10 to 14 V

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR

OK → See step 3

REPLACE COMBINATION METER ASSEMBLY. Refer to REMOVAL