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.

CHECK DTC

Use the intelligent tester or Techstream to check if the CAN communication system is functioning normally.

Result

RESULT CHART

Result	Proceed to
CAN DTC is not output	A

RESULT CHART

Result	Proceed to
CAN DTC is output	B

B: GO TO CAN COMMUNICATION SYSTEM (See HOW TO PROCEED WITH TROUBLESHOOTING )

A: Go to next Step

READ VALUE USING INTELLIGENT TESTER OR TECHSTREAM (MIRROR MASTER SWITCH AND MIRROR CONTROL SWITCH)

Check the DATA LIST for proper functioning of the mirror master switch and mirror control switch.

D-SEAT SW

Intelligent tester

DIAGNOSTIC NOTE NORMAL CONDITION CHART

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
MIRR SEL SW L	Mirror master switch signal for LH mirror / ON or OFF	ON Switch is in L position OFF Switch is OFF or in R position	-
MIR - ADJ RIGHT	Mirror control switch signal (RIGHT) / ON or OFF	ON RIGHT switch is ON OFF Any switch except RIGHT is ON or all switches are OFF	-
MIR-ADJ LEFT	Mirror control switch signal (LEFT) / ON or OFF	ON LEFT switch is ON OFF Any switch except LEFT is ON or all switches are OFF	-
MIR-ADJ UP	Mirror control switch signal (UP) / ON or OFF	ON UP switch is ON OFF Any switch except UP is ON or all switches are OFF	-
MIR-ADJ DOWN	Mirror control switch signal (DOWN) / ON or OFF	ON DOWN switch is ON OFF Any switch except DOWN is ON or all switches are OFF	-

Techstream

D-SEAT SW

DIAGNOSTIC NOTE NORMAL CONDITION CHART

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
Mirror Selection SW (Left)	Mirror master switch signal for LH mirror / ON or OFF	ON Switch is in L position OFF Switch is OFF or in R position	-
Mirror Adjustment Right	Mirror control switch signal (RIGHT)/ON or OFF	ON RIGHT switch is ON OFF Any switch except RIGHT is ON or all switches are OFF	-
Mirror Adjustment Left	Mirror control switch signal (LEFT) / ON or OFF	ON LEFT switch is ON OFF Any switch except LEFT is ON or all switches are OFF	-
Mirror Adjustment Up	Mirror control switch signal (UP) / ON or OFF	ON UP switch is ON OFF Any switch except UP is ON or all switches are OFF	-
Mirror Adjustment Down	Mirror control switch signal (DOWN) / ON or OFF	ON DOWN switch is ON OFF Any switch except DOWN is ON or all switches are OFF	-

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

NG: REPLACE OUTER MIRROR SWITCH ASSEMBLY (See REMOVAL )

OK: Go to next Step

PERFORM ACTIVE TEST USING INTELLIGENT TESTER OR TECHSTREAM (POWER MIRROR CONTROL FUNCTION)

Select the ACTIVE TEST, use the intelligent tester or Techstream to generate a control command, and then check the power mirror control function.

Intelligent tester

D-DOOR

TESTER DISPLAY CHART

Tester Display	Test Part	Control Range	Diagnostic Note
MIRR UP / DOWN	Mirror vertical operation	UP / OFF / DOWN	-
MIRR RIGHT / LEFT	Mirror horizontal operation	RIGHT/OFF/LEFT	-

Techstream

Driver Door

TESTER DISPLAY CHART

Tester Display	Test Part	Control Range	Diagnostic Note
Mirror Up / Down	Mirror vertical operation	Up / OFF / Down	-
Mirror Right / Left	Mirror horizontal operation	Right / OFF / Left	-

Result

RESULT CHART

Result	Proceed to
Outer rear view mirror LH does not operate normally	A
Outer rear view mirror LH operates normally	B

B: REPLACE OUTER MIRROR SWITCH ASSEMBLY (See REMOVAL )

A: Go to next Step

INSPECT OUTER REAR VIEW MIRROR ASSEMBLY LH (LEFT / RIGHT MOTOR, UP / DOWN MOTOR)

Remove the mirror LH (see REMOVAL ).

Apply battery voltage and check the operation of the power mirror

MEASUREMENT SPECIFIED CONDITION CHART

Measurement Condition	Specified Condition
Battery positive (+) → Terminal 1 (RMVR) Battery negative (-) → Terminal 10 (RNI+R)	Turns upward (A)
Battery negative (-) → Terminal 1 (RMVR) Battery positive (+) → Terminal 10 (RM+R)	Turns downward (B)
Battery positive (+) → Terminal 9 (RMHR) Battery negative (-) → Terminal 10 (RM+R)	Turns left (C)
Battery negative (-) → Terminal 9 (RMHR) Battery positive (+) → Terminal 10 (RM+R)	Turns right (D)

NG: REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH (See REMOVAL )

Fig 1: Identifying Outer Rear View Mirror LH Connector Terminal

OK: REPLACE FRONT DOOR ECU LH (See ON-VEHICLE INSPECTION )