Inspection Procedure

WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Before performing the inspection, check that there are no problems related to the "CAN COMMUNICATION SYSTEM" and "LIN COMMUNICATION SYSTEM".

CHECK POWER DOOR LOCK OPERATION
1. When the master switch assembly's door control switch is operated, check that the locked doors unlock (see OPERATION CHECK )
  OK: Locked doors unlock.
NG: GO TO POWER DOOR LOCK CONTROL SYSTEM )

OK: Go to next Step

READ VALUE USING INTELLIGENT TESTER OR TECHSTREAM

Using the intelligent tester or Techstream, read the Data List (see DATA LIST / ACTIVE TEST )

Intelligent tester

P-DOOR

DIAGNOSTIC NOTE NORMAL CONDITION CHART

Tester Display	Measurement Item/Display	Normal Condition	Diagnostic Note
ENTRY SENSOR	Front passenger side door touch sensor / ON or OFF	ON Front passenger side door sensor is touched OFF Front passenger side door sensor is not touched	-

Techstream

Passenger Door

DIAGNOSTIC NOTE NORMAL CONDITION CHART

Tester Display	Measurement Item/Display	Normal Condition	Diagnostic Note
Entry Sensor	Front passenger side door touch sensor / ON or OFF	ON Front passenger side door sensor is touched OFF Front passenger side door sensor is not touched	-

OK: On tester screen, item changes between ON and OFF according to above chart.

NG: Go to step 4

OK: Go to next Step

CHECK FRONT DOOR ECU RH (OPERATION)
1. Replace the front door ECU RH with a new one or normally functioning one (see FRONT DOOR ).
2. Check that the entry function operates normally (see OPERATION CHECK ).
  OK: Operates normally
NG: REPLACE CERTIFICATION ECU (See REMOVAL )

OK: END (FRONT DOOR ECU RH IS DEFECTIVE)

CHECK HARNESS AND CONNECTOR (FRONT DOOR ECU RH - DOOR ELECTRICAL KEY OSCILLATOR)

Fig 1: Identifying A1 Oscillator Connector Terminals And N1 ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Disconnect the N1 ECU connector
Disconnect the a1 oscillator connector

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
N1-15 (SEL) - a1-4 (SEL)	Always	Below 1 Ω
N1-15 (SEL) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next Step

CHECK HARNESS AND CONNECTOR (DOOR ELECTRICAL KEY OSCILLATOR - FRONT DOOR OUTSIDE HANDLE RH)

Fig 2: Identifying A2 Handle Connector Terminals And A1 Oscillator Connector Terminals

Disconnect the a1 oscillator connector.
Disconnect the a2 handle connector

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
a1-2 (SGT2) - a2-6 (SGT1)	Always	Below 1 Ω
a1-2 (SGT2) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next Step

CHECK DOOR ELECTRICAL KEY OSCILLATOR (OPERATION)
1. Replace the door electrical key oscillator with a new one or normally functioning one (see FRONT DOOR ).
2. Check that the entry function operates normally (see OPERATION CHECK )
  OK: Operates normally
NG: Go to step 7

OK: END (DOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE)
CHECK FRONT DOOR HANDLE OUTSIDE RH (OPERATION)
1. Replace the front door outside handle RH with a new one or normally functioning one (see ENTRY LOCK AND UNLOCK SWITCH (FOR FRONT) )
2. Check that the entry function operates normally (see OPERATION CHECK )
  OK: Operates normally
NG: Go to step 8

OK: END (FRONT DOOR OUTSIDE HANDLE RH IS DEFECTIVE)
CHECK FRONT DOOR ECU RH (OPERATION)
1. Replace the front door ECU RH with a new one or normally functioning one (see FRONT DOOR )
2. Check that the entry function operates normally (see OPERATION CHECK )
  OK: Operates normally
NG: REPLACE CERTIFICATION ECU (See REMOVAL )

OK: END (FRONT DOOR ECU RH IS DEFECTIVE)