SYSTEM DESCRIPTION
The power mirror control system with memory function moves the power mirror to the memorized position when the seat memory switch is pressed. The system is controlled by the seat ECU (position control ECU & switch assembly built into the driver side seat) whose memory function records the desired position of the mirror and the outer mirror control ECU which commands the mirror motor to operate. When the power mirror control system with memory function is operating normally, pressing the seat memory switch activates the seat ECU to send a signal to the outer mirror control ECU via BEAN, which then commands the mirror to move the memorized position.
DESCRIPTION
A switch signal of the outer mirror switch is transmitted to the selected outer mirror control ECU by way of the multiplex network body ECU. Then, the outer mirror control ECU activates the mirror motor to move the mirror UP, DOWN, RIGHT and LEFT in response to the input.
HINT
The power mirror control system is a part of the multiplex communication system. This system features shared communication wiring that reduces the wiring complexity of the communication lines. The first step in any repair is to confirm the proper operation of the communication system. Proceed with troubleshooting after the communication has been verified (See the MULTIPLEX COMMUNICATION SYSTEM ).
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- READ VALUE ON INTELLIGENT TESTER Check the DATA LIST for proper function of the outer mirror switches. BODY ITEM CONDITION CHART Item Measurement Item/Display (Range) Normal Condition MIRR SEL SW L Mirror selection switch signal for LH mirror/ON or OFF ON: Switch is in Left position OFF: Switch is in neutral or Right position MIRR SEL SW R Mirror selection switch signal for RH mirror/ON or OFF ON: Switch is in Right position OFF: Switch is in neutral or Left position MIRR POS SW L Mirror position switch signal (Left)/ON or OFF ON: Switch L is ON OFF: Any switch except L is ON or ail switches are OFF MIRR POS SW R Mirror position switch signal (Right)/ON or OFF ON: Switch R is ON OFF: Any switch except R is ON or all switches are OFF MIRR POS SW UP Mirror position switch signal (Up)/ON or OFF ON: Switch UP is ON OFF: Any switch except UP is ON or all switches are OFF MIRR POS SW DWN Mirror position switch signal (Down)/ON or OFF ON: Switch DOWN is ON OFF: Any switch except DOWN is ON or all switches are OFF NG: GO TO step 2 OK: CHECK AND REPLACE OUTER MIRROR CONTROL ECU
- INSPECT OUTER MIRROR SWITCH Remove the outer mirror switch. Measure the resistance according to the value(s) in the table below when the switch is operated. Standard resistance TESTER CONNECTION SPECIFIED CONDITION Tester Connection Switch Position Specified Condition 2 - 3 OFF 10 kohms or higher UP 225 to 275 ohms DOWN 437 to 503 ohms LEFT 744 to 856 ohms RIGHT 437 to 503 ohms 1 - 2 L 90 to 110 ohms R 10 ohms or less NG: REPLACE OUTER MIRROR SWITCH OK: Go to next step
- CHECK WIRE HARNESS (OUTER MIRROR SWITCH - BODY ECU) Disconnect the R5 and B4 connectors. Measure the resistance according to the value(s) in the table below. Standard resistance TESTER CONNECTION SPECIFIED CONDITION Tester Connection Condition Specified Condition R5-3 (M+) - B4-11 (MIRB) Always Below 1 ohms R5-1 (MSW) - B4-12 (MIRS) Always Below 1 ohms R5-2 (E1) - B4-3 (MIRE) Always Below 1 ohms R5-3 (M+) - Body ground Always 10 kohms or higher R5-1 (MSW) - Body ground Always 10 kohms or higher R5-2 (E1) - Body ground Always 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: PROCEED TO NEXT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
Mirror control switch and memorized mirror position signals (from the position control ECU & switch (seat ECU)) are sent to the mirror control ECU. The mirror control ECU moves the selected mirror UP, DOWN, LEFT and RIGHT in response to the input.
HINT
The power mirror control system is a part of the multiplex communication system. This system features shared communication wiring that reduces the wiring complexity of the communication lines. The first step in any repair is to confirm the proper operation of the communication system. Proceed with troubleshooting after the communication has been verified (See the MULTIPLEX COMMUNICATION SYSTEM ).
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- PERFORM ACTIVE TEST USING INTELLIGENT TESTER Select the ACTIVE TEST, use the intelligent tester to issue a control command, and then check that the outer rear view mirrors. MIRROR-L/MIRROR-R ITEM TEST DETAILS Item Test Details MIRR UP/DOWN Mirror vertical operation: UP/DOWN MIRR RIGHT/LEFT Mirror horizontal operation: RIGHT/LEFT NG: GO TO step 2 OK: REPLACE OUTER MIRROR CONTROL ECU
- INSPECT OUTER REAR VIEW MIRROR Outer rear view mirror LH: Disconnect the R29 connector. Apply battery voltage and check operation of the mirror face. Standard MEASUREMENT CONDITION CHART Measurement Condition Mirror Operation Battery positive (+) --> R29-1 (LMVR) Battery negative (-) --> R29-10 (LM+R) Turns upward (A) Battery positive (+) --> R29-10 (LM+R) Battery negative (-) --> R29-1 (LMVR) Turns downward (B) Battery positive (+) --> R29-9 (LMHR) Battery negative (-) --> R29-10 (LM+R) Turns left (C) Battery positive (+) --> R29-10 (LM+R) Battery negative (-) --> R29-9 (LMHR) Turns right (D) Outer rear view mirror RH: Disconnect the R30 connector. Apply battery voltage and check operation of the mirror face. Standard MEASUREMENT CONDITION CHART Measurement Condition Mirror Operation Battery positive (+) --> R30-1 (RMVR) Battery negative (-) --> R30-10 (RM+R) Turns upward (A) Battery positive (+) --> R30-10 (RM+R) Battery negative (-) --> R30-1 (RMVR) Turns downward (B) Battery positive (+) --> R30-9 (RMHR) Battery negative (-) --> R30-10 (RM+R) Turns left (C) Battery positive (+) --> R30-10 (RM+R) Battery negative (-) --> R30-9 (RMHR) Turns right (D) NG: REPLACE OUTER REAR VIEW MIRROR OK: REPLACE OUTER MIRROR CONTROL ECU
When the seat memory switch M1 or M2 is pressed, the position control ECU & switch (Seat ECU) transmits a signal of the memorized mirror position to the outer mirror control ECU by way of the power window regulator master switch. Then, the outer mirror control ECU drives the mirror motor.
HINT
The power mirror control system is a part of the multiplex communication system. This system features shared communication wiring that reduces the wiring complexity of the communication lines. The first step in any repair is to confirm the proper operation of the communication system. Proceed with troubleshooting after the communication has been verified (See the MULTIPLEX COMMUNICATION SYSTEM ).
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- READ VALUE ON INTELLIGENT TESTER Check the DATA LIST for proper function of the seat memory switch. D-SEAT ITEM SPECIFIED CONDITION Item Switch Position Specified condition D-MIRR MEM M1 Driver side mirror position memorized in seat memory switch M 1/NOT MEM or MEM MEM: Memorized NOT MEM: Not memorized D-MIRR MEM M2 Driver side mirror position memorized in seat memory switch M 2/NOT MEM or MEM P-MIRR MEM M1 Passenger side mirror position memorized in seat memory switch M 1/NOT MEM or MEN P-MIRR MEM M2 Passenger side mirror position memorized in seat memory switch M 2/NOT MEM or MEN NG: GO TO step 2 OK: CHECK AND REPLACE OUTER MIRROR CONTROL ECU
- CHECK SEAT MEMORY SWITCH Remove the seat memory switch. Measure the resistance according to the value(s) in the table below when the switch is operated. Standard resistance TESTER CONNECTION SPECIFIED CONDITION Tester Connection Switch Condition Specified Condition 3 - 4 "SET" switch ON Below 1 ohms 1 - 4 "1" switch ON Below 1 ohms 2 - 4 "2" switch ON Below 1 ohms NG: REPLACE SEAT MEMORY SWITCH OK: Go to next step
- CHECK WIRE HARNESS (SEAT MEMORY SWITCH - MULTIPLEX NETWORK MASTER SWITCH) Disconnect the D15 and P22 switch connectors. Measure the resistance according to the value(s) in the table below. Standard resistance TESTER CONNECTION SPECIFIED CONDITION Tester Connection Condition Specified Condition D15-2 (MMRY) - P22-3 (MM) Always Below 1 ohms D15-4 (1) - P22-13 (M1) Always Below 1 ohms D15-3 (2) - P22-17 (M2) Always Below 1 ohms D15-1 (E) - Body ground Always Below 1 ohms NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: REPLACE POSITION CONTROL ECU & SWITCH ASSEMBLY
This is the power source circuit for the outer mirror control ECU.
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- INSPECT OUTER MIRROR CONTROL ECU (POWER SOURCE) Disconnect the R27 (R28) connector. Measure the voltage and resistance according to the value(s) in the table below. Outer mirror control ECU LH: Standard voltage TESTER CONNECTION SPECIFIED CONDITION Tester Connection Condition Specified Condition R27-3 (BDR) - Body ground Always 10 to 14 V R27-7 (CPUB) - Body ground Always 10 to 14 V R27-8 (SIG) - Body ground Ignition switch ON 10 to 14 V Standard resistance TESTER CONNECTION SPECIFIED CONDITION Tester Connection Condition Specified Condition R27-1 (GND) - Body ground Always Below 1 ohms Outer mirror control ECU RH: Standard voltage TESTER CONNECTION SPECIFIED CONDITION Tester Connection Condition Specified Condition R28-3 (BDR) - Body ground Always 10 to 14 V R28-7 (CPUB) - Body ground Always 10 to 14 V R28-8 (SIG) - Body ground Ignition switch ON 10 to 14 V Standard resistance TESTER CONNECTION SPECIFIED CONDITION Tester Connection Condition Specified Condition R28-1 (GND) - Body ground Always Below 1 ohms NG: REPAIR OR REPLACE WIRE HARNESS OK: REPLACE OUTER MIRROR CONTROL ECU
