Inspection Procedure

USE LEXUS HAND-HELD TESTER
1. NO: Go to step 3
2. YES: GO TO NEXT STEP

PERFORM ACTIVE TEST OF LEXUS HAND-HELD TESTER

Using the hand-held tester, check the door mirror control switch condition by the active test.

DOOR ECU

Standard:

SPECIFIED CONDITION CHART

Item	Specified condition
Ml RR UP/DOWN	UP/OFF
MIRR UP/DOWN	DOWN/OFF
MIRR RIGHT/LEFT	LEFT OFF
MIRR RIGHT/LEFT	RIGHT OFF

HINT:

If the driver's side mirror malfunctions, proceed to "OK-A".
If the passenger's side mirror malfunctions, proceed to "OK-B".

OK-A: CHECK AND REPLACE MULTIPLEX NETWORK DOOR ECU FRONT LH (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE )
OK-B: CHECK AND REPLACE MULTIPLEX NETWORK DOOR ECU FRONT RH (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE )
NG: Go to step 4

CHECK OPERATION OF OUTER REAR VIEW MIRROR
1. Disconnect the door ECU connector, and then check that the mirror operates when the battery positive voltage is applied to the vehicle's side wire harness.
HINT:
- If the driver's side mirror malfunctions, proceed to "OK-A".
- If the passenger's side mirror malfunctions, proceed to "OK-B".
1. OK-A: CHECK AND REPLACE MULTIPLEX NETWORK DOOR ECU FRONT LH (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE )
2. OK-B: CHECK AND REPLACE MULTIPLEX NETWORK DOOR ECU FRONT RH (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE )
3. NG: GO TO NEXT STEP

INSPECT OUTER REAR VIEW MIRROR

Check the continuity between each terminal of the outer rear view mirror.

Standard:

SPECIFIED CONDITION CHART

Terminals	Specified condition
1 <--> 10	Continuity
10 <--> 9	Continuity

Fig 1: Identifying Connector Terminal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

If the driver's side mirror malfunctions, proceed to NG-A.
If the passenger's side mirror malfunctions, proceed to NG-B.

NG-A: REPLACE OUTER REAR VIEW MIRROR ASSY LH
NG-B: REPLACE OUTER REAR VIEW MIRROR ASSY RH
OK: GO TO NEXT STEP

CHECK WIRE HARNESS (OUTER REAR VIEW MIRROR - DOOR ECU)

Disconnect the outer rear view mirror and door ECU connectors.

Check the continuity between each terminal of the outer rear view mirror vehicle's side connector and the door ECU vehicle's side connector (See TERMINALS OF ECU ).

Standard: (Driver side)

SPECIFIED CONDITION CHART

Terminals (Mirror- Door ECU)	Specified condition
R14-9 <--> D19-19 (MH <--> DMHR)	Continuity
R14-10 <--> D19-20 (COM <--> DM+R)	Continuity
R14-1 <--> D19-8 (MV <--> DMVR)	Continuity

Standard: (Passenger side)

SPECIFIED CONDITION CHART

Terminals (Mirror - Door ECU)	Specified condition
R15H9 <--> P11-19 (MH <--> PMHR)	Continuity
R15-1 O <--> P11-20 (COM <--> PM+R)	Continuity
R15-1 <--> P11-8 (MV <--> PMVR)	Continuity

Fig 2: Identifying Connector Terminal

HINT:

In case of the driver's side wire harness, proceed to OK-A.
In case of the passenger's side wire harness, proceed to OK-B.

OK-A: CHECK AND REPLACE MULTIPLEX NETWORK DOOR ECU FRONT LH (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE )
OK-B: CHECK AND REPLACE MULTIPLEX NETWORK DOOR ECU FRONT RH (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE )
NG: REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR