Power Mirror Control System - Diagnosis: Other Lexus SC II

PRE-CHECK

1. INSPECT DRIVER SIDE J/B Using hand-held tester, check the driver side J/B condition on the data monitor. Standard: SPECIFIED CONDITION CHART Item Condition Specified condition OUTER MIRROR FOIL SW OFF --> Retract ON --> OFF OUTER MIRROR RETURN SW OFF --> Reinstate ON --> OFF MIRRSELSWL Right/Left adjustment switch in neutral --> LEFT ON --> OFF MIRRSELSWR Right/Left adjustment switch in neutral --> RIGHT ON --> OFF MIRR POS SW L Mirror switch in neutral --> LEFT ON --> OFF MIRR POS SW R Mirror switch in neutral --> RIGHT ON --> OFF MIRR POS SW UP Mirror switch in neutral --> UP ON --> OFF MIRR POS SW DWN Mirror switch in neutral --> DOWN ON --> OFF
2. INSPECT DRIVER SEAT ECU AND PASSENGER SEAT ECU Using hand-held tester, check the condition of the driver seat ECU and passenger seat ECU on the data monitor. Standard: SPECIFIED CONDITION CHART Item Condition Specified condition D-MIRR MEN 1 Memorized in 1 MEN/NOT MEN D-MIRR MEN 2 Memorized in 2 MEN/NOT MEN P-MIRR MEN 1 Memorized in 1 MEN/NOT MEN P-MIRR MEN 2 Memorized in 2 MEN/NOT MEN D-MIRR MEN POS 1 Memorized in 1 0-5000 D-MIRR MEN POS 2 Memorized in 2 0-5000 P-MIRR MEN POS 1 Memorized in 1 0-5000 P-MIRR MEN POS 2 Memorized in 2 0-5000 PNPSW Shifted in P range ON/OFF NSW Shifted in N range ON/OFF VEHICLE SPD While driving 0 <--> 255 km/h
3. PERFORM ACTIVE TEST (DOOR ECU) Using hand-held tester, check the operation of the power mirror. Standard: SPECIFIED CONDITION CHART Item Specified condition MIRR UP/DOWN UP/OFF MIRR UP/DOWN DOWN/OFF MIRRRIGHIT/LEFT LEFT OFF MIRRRIGHIT/LEFT RIGHT OFF MIRRFOLD/RETRN FOLD OFF MIRRFOLD/RETRN RETRN OFF

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1. INSPECT DRIVER DOOR ECU Check the voltage and continuity between each terminal of the vehicle's side connector. Standard: WIRING COLOR CHART Symbols (Terminal No.) Wiring Color Condition Specified condition D19-1 <--> Body ground (GND - Body ground) W-B <--> Body ground Constant Continuity D19-4 <--> D19-1 (CPUB <--> GND) L-O <--> W-B Constant 10-14V D19-5 <--> D19-1 (SIG <--> GND) V-W <--> W-B Ignition switch OFF --> ON 0V --> 10-14V D19-6 <--> D19-1 (BDR <--> GND) B-R <--> W-B Constant 10-14V D19-22 <--> D19-1 (HTR <--> GND) W-B <--> W-B Constant Continuity D19-13 <--> D19-1 (HTR+ <--> GND) R-W <--> W-B Constant Continuity HINT: If the value is not as specified, a malfunction exists at the vehicle's side. Connect the connectors and check the voltage between each terminal of the connectors. Standard: WIRING COLOR CHART Symbols (Terminal No.) Wiring Color Condition Specified condition D19-7 <--> Body ground (MR+ <--> Body ground) Y <--> Body ground Driver outer rear view mirror is retracting 10-14V D19-18 <--> D19-1 (MR- <--> GND) V <--> W-B Driver outer rear view mirror is returning 10-14V D19-20 <--> D19-1 (DM+R <--> GND) R-B <--> W-B Driver outside view mirror OFF --> turning down OFF --> turning right 10-14V --> 0V D19-19 <--> D19-1 (DMHR <--> GND) LG <--> W-B Driver outer rear view mirror OFF --> turning left 10-14V --> 0V D19-8 <--> D19-1 (DMVR <--> GND) LG-B <--> W-B Driver outer rear view mirror OFF --> turning up 10-14V --> 0V D19-15 <--> D19-1 (EC+ <--> GND) 0 <--> W-B Driver outer rear view mirror OFF --> turning right and left 10-14V --> 0V D19-26 <--> D19-1 (HSSR <--> GND) GR <--> W-B Driver outer rear view mirror OFF --> turning right and left 10-14V-0V D19-25 <--> D19-1 (DE2 <--> GND) R <--> W-B Driver outer rear view mirror OFF --> turning right and left 10-14V --> 0V D19-16 <--> D19-1 (VSSR <--> GND) G-0 <--> W-B Driver outer rear view mirror OFF --> turning up and down 10-14V --> 0V HINT: If the value is not as specified, a malfunction exists in the door ECU or the communication line.
2. INSPECT PASSENGER DOOR ECU Check the voltage and continuity between each terminal of the vehicle's side connector. Standard: WIRING COLOR CHART Symbols (Terminal No.) Wiring Color Condition Specified condition P11-1 <--> Body ground (GND - Body ground) W-B <--> Body ground Constant Continuity P11-4 <--> P11-1 (CPUB <--> GND) L-O <--> W-B Constant 10-14V P11-5 <--> P11-1 (SIG <--> GND) V-W <--> W-B Ignition switch OFF --> ON 0V --> 10-14V P11-6 <--> P11-1 (BDR <--> GND) G-Y <--> W-B Constant 0V --> 10-14V P11-22 <--> P11-1 (HTR- <--> GND) W-B <--> W-B Constant Continuity P11-13 <--> P11-1 (HTR+ <--> GND) R-W <--> W-B Constant Continuity HINT: If the value is not as specified, a malfunction exists in the vehicle's side. Connect connectors and check the voltage between each terminal of the connectors. Standard: WIRING COLOR CHART Symbols (Terminal No.) Wiring Color Condition Specified condition P11 -7 <--> Body ground (MR+ 0 Body ground) Y <--> Body ground Driver outer rear view mirror is retracting 10-14V P11-18 <--> P11-1 (MR-0 GND) V<-->W-B Driver outer rear view mirror is returning 10-14V P11-20 <--> P11-1 (PM+R <--> GND) R-B <--> W-B Driver outer rear view mirror OFF --> turning down OFF --> turning right 10-14V --> 0V P11-19 <--> P11-1 (PMHR <--> GND) LG <--> W-B Driver outer rear view mirror OFF--> turning left 10-14V --> 0V P11-8 <--> P11-1 (PMVR <--> GND) G-B <--> W-B Driver outer rear view mirror OFF --> turning up 10-14V --> 0V P11-15 <--> P11-1 (EC+ <--> GND) 0 <--> W-B Driver outer rear view mirror OFF --> turning right and left 10-14V --> 0V P11-26 <--> P11-1 (HSSR <--> GND) GR <--> W-B Driver outer rear view mirror OFF --> turning right and left 10-14V --> 0V P11-25 <--> P11-1 (PE2 <--> GND) P-L <--> W-B Driver outer rear view mirror OFF --> turning right and left 10-14V --> 0V P11-16 <--> P11-1 (VSSR <--> GND) G-0 <--> W-B Driver outer rear view mirror OFF --> turning up and down 10-14V --> 0V HINT: If the value is not as specified, a malfunction exists in the door ECU or the communication line.
3. INSPECT DRIVER SIDE J/B (DRIVER SIDE J/B ECU) Check the voltage and continuity between each terminal of the vehicle's side connector. WIRING COLOR CHART Symbols (Terminal No.) Wiring Color Condition Specified condition D3-5 <--> D3-1 (MPX-B <--> GND2) L-B <--> W-B Constant Below 1 V D5-7 <--> Body ground (R/E <--> Body ground) LG <--> Body ground Constant Below 1 V D5-8 <--> D3-1 (RET <--> GND2) GR <--> W-B Mirror retract switch OFF Below 1 V D5-8 <--> D3-1 (RET <--> GND2) GR <--> W-B Mirror retract switch RETRACT 10-14V D5-10 <--> D4-8 (MSW <--> R/E) R <--> LG Mirror right/left adjustment switch OFF Below 1 V D5-10 <--> D4-8 (MSW <--> R/E) R <--> LG Mirror right/left adjustment switch LEFT or RIGHT 0-5V D5-11 <--> D4-8 (M+ <--> R/E) R-B <--> LG Mirror control switch neutral position Below 1 V D5-11 <--> D4-8 (M+ <--> R/E) R-B <--> LG Mirror control switch any position 0-5V