Inspection Procedure

CHECK MANUAL DOOR LOCK AND UNLOCK OPERATION
1. Check that the manual door lock and unlock function operates normally.
  OK:
  
  Manual door lock and unlock function operates normally.
NG: GO TO POWER DOOR LOCK CONTROL SYSTEM

OK: Go to next step

PERFORM ACTIVE TEST BY INTELLIGENT TESTER (DOOR ELECTRICAL KEY OSCILLATOR FRONT LH)

Select the ACTIVE TEST, use the intelligent tester to generate a control command, and then check that the oscillator operates.

Certification ECU:

CERTIFICATION ECU - ACTIVE TEST LIST

Item	Test Details	Diagnostic Note
D TRANSMITTER	Driver side transmitter ON / OFF	-

OK:

When key is brought close to door oscillator that is OFF, indicator light on key illuminates.

OK: REPLACE CERTIFICATION ECU ASSEMBLY

NG: Go to next step

CHECK WIRE HARNESS (ECU - OSCILLATOR)

Disconnect the U28 ECU connector.
Disconnect the q2 oscillator connector.

Measure the resistance of the wire harness side connector.

Standard resistance

RESISTANCE SPECIFICATION

Tester Connection	Specified Condition
U28-33 (CLG1) - q2-10 (CLG)	Below 1 Ω
U28-34 (CG1B) - q2-5 (CLGB)	Below 1 Ω

Fig 1: Identifying U28 ECU And Q2 Oscillator Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: Go to next step

CHECK WIRE HARNESS (OSCILLATOR - ANTENNA)

Disconnect the q2 oscillator connector.
Disconnect the q1 antenna connector.

Measure the resistance of the wire harness side connector.

Standard resistance

RESISTANCE SPECIFICATION

Tester Connection	Specified Condition
q2-2 (SGT) - q1-6 (SGT2)	Below 1 Ω
q2-3 (ANT1) - q1-5 (ANT1)	Below 1 Ω
q2-8 (ANT2) - q1-2 (ANT2)	Below 1 Ω
q2-9 (TRG-) - q1-1 (TRG-)	Below 1 Ω

Fig 2: Identifying Q2 Oscillator And Q1 Antenna Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: Go to next step

CHECK WIRE HARNESS (OSCILLATOR - ECU)

Disconnect the q2 oscillator connector.
Disconnect the N4 ECU connector.

Measure the resistance of the wire harness side connector.

Standard resistance

RESISTANCE SPECIFICATION

Tester Connection	Specified Condition
q2-1 (+B) - N4-7 (OSCB)	Below 1 Ω
q2-7 (GND) - N4-20 (OSCE)	Below 1 Ω

Fig 3: Identifying Q2 Oscillator And N4 Connector Terminals

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: Go to next step

CHECK WIRE HARNESS (ANTENNA - ECU)

Disconnect the q1 oscillator connector.
Disconnect the N4 ECU connector.

Measure the resistance of the wire harness side connector.

Standard resistance

RESISTANCE SPECIFICATION

Tester Connection	Specified Condition
q1-3 (TRG+) - N4-18 (TRG+)	Below 1 Ω

Fig 4: Identifying Q1 Oscillator And N4 ECU Connector Terminals

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: Go to next step

CHECK OPERATION OF ELECTRICAL KEY ANTENNA FRONT LH
1. After replacing the electrical key antenna front LH with a normal one, check that the entry lock and unlock functions operate normally.
  OK:
  
  Entry lock and unlock functions operate normally.
OK: END (ELECTRICAL KEY ANTENNA FRONT LH IS DEFECTIVE)

NG: Go to next step
CHECK OPERATION OF DOOR ELECTRICAL KEY OSCILLATOR FRONT LH
1. After replacing the door electrical key oscillator front LH with a normal one, check that the entry lock and unlock functions operate normally.
  OK:
  
  Entry lock and unlock functions operate normally.
NG: REPLACE CERTIFICATION ECU ASSEMBLY

OK: END (DOOR ELECTRICAL KEY OSCILLATOR FRONT LH IS DEFECTIVE)