POWER MIRROR CONTROL SYSTEM(w/ Memory) TERMINALS OF ECU

CHECK OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER DOOR)

for LHD

for RHD

Disconnect the O8*1 or N9*2 outer mirror control ECU assembly (driver door) connector.
- *1: for LHD
- *2: for RHD

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

Tech Tips

Measure the values on the wire harness side with the connector disconnected.

for LHD:
Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
O8-14 (BDR) - Body ground	GR - Body ground	+B power supply	Always	11 to 14 V
O8-6 (CPUB) - Body ground	LA-L - Body ground	+B power supply	Always	11 to 14 V
O8-5 (SIG) - Body ground	LA-B - Body ground	Ignition power supply	Engine switch off → on (IG)	Below 1 V → 11 to 14 V
O8-7 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω

for RHD:
Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
N9-14 (BDR) - Body ground	GR - Body ground	+B power supply	Always	11 to 14 V
N9-6 (CPUB) - Body ground	LA-L - Body ground	+B power supply	Always	11 to 14 V
N9-5 (SIG) - Body ground	LA-B - Body ground	Ignition power supply	Engine switch off → on (IG)	Below 1 V → 11 to 14 V
N9-7 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω

Reconnect the O8*1 or N9*2 outer mirror control ECU assembly (driver door) connector.
- *1: for LHD
- *2: for RHD

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

for LHD:
Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
O9-3 (MR+) - Body ground	B - Body ground	Power retract mirror motor drive voltage	Outer rear view mirror assembly (driver door) being retracted	11 to 14 V
O9-3 (MR+) - Body ground	B - Body ground	Power retract mirror motor drive voltage	Outer rear view mirror assembly (driver door) stopped	Below 1 V
O9-11 (MR-) - Body ground	L - Body ground	Power retract mirror motor drive voltage	Outer rear view mirror assembly (driver door) returning	11 to 14 V
O9-11 (MR-) - Body ground	L - Body ground	Power retract mirror motor drive voltage	Outer rear view mirror assembly (driver door) stopped	Below 1 V
O9-1 (LMVR) - O9-10 (LM+R)	BR - V	Vertical mirror motor drive voltage	Driver door mirror surface moving upward → stopped	11 to 14 V → Below 1 V
O9-10 (LM+R) - O9-1 (LMVR)	V - BR	Vertical mirror motor drive voltage	Driver door mirror surface moving downward → stopped	11 to 14 V → Below 1 V
O9-10 (LM+R) - O9-9 (LMHR)	V - LG	Horizontal mirror motor drive voltage	Driver door mirror surface moving right → stopped	11 to 14 V → Below 1 V
O9-9 (LMHR) - O9-10 (LM+R)	LG - V	Horizontal mirror motor drive voltage	Driver door mirror surface moving left → stopped	11 to 14 V → Below 1 V
O9-4 (HTR+) - O9-12 (HTR-)	LG - W	Mirror heater relay drive voltage	Mirror heater switch (rear window defogger switch) on	11 to 14 V
O9-5 (LVC) - O9-14 (LE1)	G - BR	Mirror position sensor power supply	Engine switch on (IG)	4.55 to 5.45 V
O9-5 (LVC) - O9-14 (LE1)	G - BR	Mirror position sensor power supply	Engine switch off	Below 1 V
O9-6 (VSSR) - O8-7 (GND)	V - W-B	Mirror position sensor signal	Engine switch on (IG)	0 to 5 V
O9-13 (HSSR) - O8-7 (GND)	GR - W-B	Mirror position sensor signal	Engine switch on (IG)	0 to 5 V
O8-3 (M2) - O8-7 (GND)	R - W-B	M2 switch signal for seat memory switch	M2 switch on	Below 1 V
O8-3 (M2) - O8-7 (GND)	R - W-B	M2 switch signal for seat memory switch	M2 switch off	11 to 14 V
O8-2 (M1) - O8-7 (GND)	BR - W-B	M1 switch signal for seat memory switch	M1 switch on	Below 1 V
O8-2 (M1) - O8-7 (GND)	BR - W-B	M1 switch signal for seat memory switch	M1 switch off	11 to 14 V
O8-1 (MM) - O8-7 (GND)	GR - W-B	SET switch signal for seat memory switch	SET switch on	Below 1 V
O8-1 (MM) - O8-7 (GND)	GR - W-B	SET switch signal for seat memory switch	SET switch off	11 to 14 V

for RHD:
Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
N10-1 (RMVR) - N10-10 (RM+R)	BR - V	Vertical mirror motor drive voltage	Driver door mirror surface moving upward → stopped	11 to 14 V → Below 1 V
N10-10 (RM+R) - N10-1 (RMVR)	V - BR	Vertical mirror motor drive voltage	Driver door mirror surface moving downward → stopped	11 to 14 V → Below 1 V
N10-10 (RM+R) - N10-9 (RMHR)	V - LG	Horizontal mirror motor drive voltage	Driver door mirror surface moving right → stopped	11 to 14 V → Below 1 V
N10-9 (RMHR) - N10-10 (RM+R)	LG - V	Horizontal mirror motor drive voltage	Driver door mirror surface moving left → stopped	11 to 14 V → Below 1 V
N10-5 (RVC) - N10-14 (RE1)	G - BR	Mirror position sensor power supply	Engine switch on (IG)	4.55 to 5.45 V
N10-5 (RVC) - N10-14 (RE1)	G - BR	Mirror position sensor power supply	Engine switch off	Below 1 V
N10-6 (VSSR) - N9-7 (GND)	V - W-B	Mirror position sensor signal	Engine switch on (IG)	0 to 5 V
N10-13 (HSSR) - N9-7 (GND)	GR - W-B	Mirror position sensor signal	Engine switch on (IG)	0 to 5 V
N9-3 (M2) - N9-7 (GND)	R - W-B	M2 switch signal for seat memory switch	M2 switch on	Below 1 V
N9-3 (M2) - N9-7 (GND)	R - W-B	M2 switch signal for seat memory switch	M2 switch off	11 to 14 V
N9-2 (M1) - N9-7 (GND)	BR - W-B	M1 switch signal for seat memory switch	M1 switch on	Below 1 V
N9-2 (M1) - N9-7 (GND)	BR - W-B	M1 switch signal for seat memory switch	M1 switch off	11 to 14 V
N9-1 (MM) - N9-7 (GND)	GR - W-B	SET switch signal for seat memory switch	SET switch on	Below 1 V
N9-1 (MM) - N9-7 (GND)	GR - W-B	SET switch signal for seat memory switch	SET switch off	11 to 14 V

CHECK OUTER MIRROR CONTROL ECU ASSEMBLY (FRONT PASSENGER DOOR)

for LHD

for RHD

Disconnect the N9*1 or O8*2 outer mirror control ECU assembly (front passenger door) connector.
- *1: for LHD
- *2: for RHD

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

Tech Tips

Measure the values on the wire harness side with the connector disconnected.

for LHD:
Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
N9-14 (BDR) - Body ground	GR - Body ground	+B power supply	Always	11 to 14 V
N9-6 (CPUB) - Body ground	LA-L - Body ground	+B power supply	Always	11 to 14 V
N9-5 (SIG) - Body ground	LA-B - Body ground	Ignition power supply	Engine switch off → on (IG)	Below 1 V → 11 to 14 V
N9-7 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω

for RHD:
Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
O8-14 (BDR) - Body ground	GR - Body ground	+B power supply	Always	11 to 14 V
O8-6 (CPUB) - Body ground	LA-L - Body ground	+B power supply	Always	11 to 14 V
O8-5 (SIG) - Body ground	LA-B - Body ground	Ignition power supply	Engine switch off → on (IG)	Below 1 V → 11 to 14 V
O8-7 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω

Reconnect the N9*1 or O8*2 outer mirror control ECU assembly (front passenger door) connector.
- *1: for LHD
- *2: for RHD

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

for LHD:
Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
N10-3 (MR+) - Body ground	B - Body ground	Power retract mirror motor drive voltage	Outer rear view mirror assembly (front passenger door) being retracted	11 to 14 V
N10-3 (MR+) - Body ground	B - Body ground	Power retract mirror motor drive voltage	Outer rear view mirror assembly (front passenger door) stopped	Below 1 V
N10-11 (MR-) - Body ground	P - Body ground	Power retract mirror motor drive voltage	Outer rear view mirror assembly (front passenger door) returning	11 to 14 V
N10-11 (MR-) - Body ground	P - Body ground	Power retract mirror motor drive voltage	Outer rear view mirror assembly (front passenger door) stopped	Below 1 V
N10-1 (RMVR) - N10-10 (RM+R)	BR - V	Vertical mirror motor drive voltage	Front passenger door mirror surface moving upward → stopped	11 to 14 V → Below 1 V
N10-10 (RM+R) - N10-1 (RMVR)	V - BR	Vertical mirror motor drive voltage	Front passenger door mirror surface moving downward → stopped	11 to 14 V → Below 1 V
N10-10 (RM+R) - N10-9 (RMHR)	V - LG	Horizontal mirror motor drive voltage	Front passenger door mirror surface moving right → stopped	11 to 14 V → Below 1 V
N10-9 (RMHR) - N10-10 (RM+R)	LG - V	Horizontal mirror motor drive voltage	Front passenger door mirror surface moving left → stopped	11 to 14 V → Below 1 V
N10-4 (HTR+) - N10-12 (HTR-)	LG - W	Mirror heater relay drive voltage	Mirror heater switch (rear window defogger switch) on	11 to 14 V
N10-5 (RVC) - N10-14 (RE1)	G - BR	Mirror position sensor power supply	Engine switch on (IG)	4.55 to 5.45 V
N10-5 (RVC) - N10-14 (RE1)	G - BR	Mirror position sensor power supply	Engine switch off	Below 1 V
N10-6 (VSSR) - N9-7 (GND)	V - W-B	Mirror position sensor signal	Engine switch on (IG)	0 to 5 V
N10-13 (HSSR) - N9-7 (GND)	GR - W-B	Mirror position sensor signal	Engine switch on (IG)	0 to 5 V

for RHD:
Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
O9-1 (LMVR) - O9-10 (LM+R)	BR - V	Vertical mirror motor drive voltage	Front passenger door mirror surface moving upward → stopped	11 to 14 V → Below 1 V
O9-10 (LM+R) - O9-1 (LMVR)	V - BR	Vertical mirror motor drive voltage	Front passenger door mirror surface moving downward → stopped	11 to 14 V → Below 1 V
O9-10 (LM+R) - O9-9 (LMHR)	V - LG	Horizontal mirror motor drive voltage	Front passenger door mirror surface moving right → stopped	11 to 14 V → Below 1 V
O9-9 (LMHR) - O9-10 (LM+R)	LG - V	Horizontal mirror motor drive voltage	Front passenger door mirror surface moving left → stopped	11 to 14 V → Below 1 V
O9-5 (LVC) - O9-14 (LE1)	G - BR	Mirror position sensor power supply	Engine switch on (IG)	4.55 to 5.45 V
O9-5 (LVC) - O9-14 (LE1)	G - BR	Mirror position sensor power supply	Engine switch off	Below 1 V
O9-6 (VSSR) - O8-7 (GND)	V - W-B	Mirror position sensor signal	Engine switch on (IG)	0 to 5 V
O9-13 (HSSR) - O8-7 (GND)	GR - W-B	Mirror position sensor signal	Engine switch on (IG)	0 to 5 V

CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

for LHD

for RHD

Disconnect the instrument panel junction block assembly and main body ECU (multiplex network body ECU) connectors.

Click here
Reconnect the instrument panel junction block assembly connectors.

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

Tech Tips

Measure the values on the wire harness side with the connector disconnected.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
MB-31 (BECU) - Body ground	-	Battery power supply	Always	11 to 14 V
MB-32 (IG) - Body ground	-	Ignition power supply (IG signal)	Engine switch on (IG)	11 to 14 V
MB-32 (IG) - Body ground	-	Ignition power supply (IG signal)	Engine switch off	Below 1 V
MB-30 (ACC) - Body ground	-	Ignition power supply (ACC signal)	Engine switch on (ACC)	11 to 14 V
MB-30 (ACC) - Body ground	-	Ignition power supply (ACC signal)	Engine switch off	Below 1 V
MB-11 (GND1) - Body ground	-	Ground	Always	Below 1 Ω

Connect the main body ECU (multiplex network body ECU) connectors.

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

for LHD:
Tester Connection	Wiring Color	Terminal Description	Condition	Specified Condition
K53-7 (MIRB) - K53-9 (MIRE)	L - W	Mirror surface adjust switch signal	Engine switch on (ACC) Mirror surface adjust switch up	Below 1.7 V
			Engine switch on (ACC) Mirror surface adjust switch right	Below 2.7 V
			Engine switch on (ACC) Mirror surface adjust switch down	Below 3.5 V
			Engine switch on (ACC) Mirror surface adjust switch left	Below 4 V
			Engine switch on (ACC) Mirror surface adjust switch off	3.8 to 5 V
K53-8 (MIRS) - K53-9 (MIRE)	GR - W	Mirror select switch signal	Engine switch on (ACC) Mirror select switch L	Below 2 V
			Engine switch on (ACC) Mirror select switch R	Below 1 V
			Engine switch on (ACC) Mirror select switch off	3.8 to 5.0 V
K53-16 (RET) - K53-9 (MIRE)	B - W	Mirror retract switch signal	Engine switch on (ACC) Mirror retract switch not in return position	Pulse generation (See waveform 1 or 2)
K53-16 (RET) - K53-9 (MIRE)	B - W	Mirror retract switch signal	Engine switch on (ACC) Mirror retract switch in return position	Below 1 V
K53-6 (AMR) - K53-9 (MIRE)	BE - W	Mirror retract switch signal	Engine switch on (ACC) Mirror retract switch not in retract position	Pulse generation (See waveform 1 or 2)
K53-6 (AMR) - K53-9 (MIRE)	BE - W	Mirror retract switch signal	Engine switch on (ACC) Mirror retract switch in retract position	Below 1 V

Using an oscilloscope, check waveform 1.

Waveform 1 (Reference)
Item	Content
Tester Connection	K53-16 (RET) or K53-6 (AMR) - K53-9 (MIRE)
Tool Setting	5 V/DIV., 20 ms/DIV.
Condition	Engine switch on (ACC) Retractable outer mirror switch not in return position

Using an oscilloscope, check waveform 2.

Waveform 2 (Reference)
Item	Content
Tester Connection	K53-16 (RET) or K53-6 (AMR) - K53-9 (MIRE)
Tool Setting	5 V/DIV., 20 ms/DIV.
Condition	Engine switch on (ACC) Retractable outer mirror switch not in retract position

for RHD:
Tester Connection	Wiring Color	Terminal Description	Condition	Specified Condition
K53-7 (MIRB) - K53-9 (MIRE)	L - W	Mirror surface adjust switch signal	Engine switch on (ACC) Mirror surface adjust switch up	Below 1.7 V
			Engine switch on (ACC) Mirror surface adjust switch right	Below 2.7 V
			Engine switch on (ACC) Mirror surface adjust switch down	Below 3.5 V
			Engine switch on (ACC) Mirror surface adjust switch left	Below 4 V
			Engine switch on (ACC) Mirror surface adjust switch off	3.8 to 5 V
K53-8 (MIRS) - K53-9 (MIRE)	GR - W	Mirror select switch signal	Engine switch on (ACC) Mirror select switch L	Below 2 V
			Engine switch on (ACC) Mirror select switch R	Below 1 V
			Engine switch on (ACC) Mirror select switch off	3.8 to 5.0 V