Inspection Procedure

CHECK THEFT WARNING ECU ASSEMBLY

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

Standard Voltage

VOLTAGE SPECIFICATION

Tester Connection	Condition	Specified Condition
E72-11 (+B1) - Body ground	Always	11 to 14 V

Fig 1: Checking Theft Warning ECU Assembly

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NG: Go to step 2

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

CHECK HARNESS AND CONNECTOR (THEFT WARNING ECU ASSEMBLY - BODY GROUND)

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

Standard Resistance

RESISTANCE REFERENCE

Tester Connection	Condition	Specified Condition
E72-16 (E) - Body ground	Always	Below 1 Ω

Fig 2: Identifying E72 Theft Warning ECU Assembly Connector Terminal

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NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

CHECK HARNESS AND CONNECTOR (BATTERY - INSTRUMENT PANEL JUNCTION BLOCK)

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

Standard Voltage

VOLTAGE SPECIFICATION

Tester Connection	Condition	Specified Condition
2B-30 - Body ground	Always	11 to 14 V

Fig 3: Identifying 2B Instrument Panel Junction Block Connector Terminal

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NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OR SHORT PIN OR ECU-B

OK: Go to Next Step

CHECK INSTRUMENT PANEL JUNCTION BLOCK (POWER SOURCE)

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

Standard Voltage

VOLTAGE SPECIFICATION

Taster Connection	Condition	Specified Condition
2H-12 - Body ground	Always	11 to 14 V

Fig 4: Identifying Instrument Panel Junction Block Connector Terminal

NG: REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)

OK: Go to Next Step

CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK - THEFT WARNING ECU ASSEMBLY)

Disconnect the 2H instrument panel junction block and E72 theft warning ECU assembly connectors.

Fig 5: Identifying 2H Instrument Panel Junction Block And E72 Theft Warning ECU Assembly Connector Terminal
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Standard Resistance

RESISTANCE REFERENCE

Tester Connection	Condition	Specified Condition
2H-12 - E72-11 (+B1)	Always	Below 1 Ω
2H-12 - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: REPLACE THEFT WARNING ECU ASSEMBLY (See THEFT WARNING ECU )