Lexus IS250 IS220d GSE20 ALE20 - MIRROR
POWER MIRROR CONTROL SYSTEM (w/ Memory) - TERMINALS OF ECU
| CHECK OUTER MIRROR CONTROL ECU LH |
Disconnect the M10 connector.
Measure the voltage and resistance according to the value(s) in the table below.
- Voltage:
Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition SIG (M10-3) - Body ground B - Body ground Ignition power supply Engine switch OFF → ON (IG) 0 V → 10 to 14 V CPUB (M10-4) - Body ground G - Body ground +B power supply Always 10 to 14 V BDR (M10-6) - Body ground L - Body ground +B power supply Always 10 to 14 V
- Resistance:
Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition GND (M10-1) - Body ground W-B - Body ground Ground Always Below 1 Ω
If the result is not as specified, there may be a malfunction on the wire harness side.
Reconnect the M10 connector.
Measure the voltage according to the value(s) in the table below.
- Voltage:
Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition MV (h1-1) - Body ground W - Body ground Outer mirror switch signal (Up or Right) Engine switch on (IG), Left/Right adjustment switch L side, Mirror switch OFF→ UP or Right 0 V → 10 to 14 V VC (h1-5) - Body ground R-W - Body ground Power source for mirror position sensor Engine switch OFF → ON (IG) 0 V → 0 to 5 V VSSR (h-6) - Body ground V - Body ground Vertical direction position signal Engine switch on (IG), Left/Right adjustment switch L side, Mirror switch uppermost position → lowermost position 0 V → 1 to 3 V MH (h1-9) - Body ground R - Body ground Outer mirror switch signal (Left or Down) Engine switch on (IG), Left/Right adjustment switch L side, Mirror switch OFF→ LEFT or DOWN 0 V → 10 to 14 V M+ (h1-10) - Body ground B - Body ground Outer mirror switch signal (Right or Down) Engine switch on (IG), Left/Right adjustment switch L side, Mirror switch OFF→ RIGHT or DOWN 0 V → 10 to 14 V HSSR (h1-13) - Body ground LG - Body ground Horizontal direction position signal Engine switch on (IG), Left/Right adjustment switch L side, Mirror switch innermost position → outermost position 0 V → 1 to 3 V
| CHECK OUTER MIRROR CONTROL ECU RH |
Disconnect the L10 connector.
Measure the voltage and resistance according to the value(s) in the table below.
- Voltage:
Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition SIG (L10-3) - Body ground B - Body ground Ignition power supply Engine switch OFF → ON (IG) 0 V → 10 to 14 V CPUB (L10-4) - Body ground G - Body ground +B power supply Always 10 to 14 V BDR (L10-6) - Body ground L - Body ground +B power supply Always 10 to 14 V
- Resistance:
Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition GND (L10-1) - Body ground W-B - Body ground Ground Always Below 1 Ω
If the result is not as specified, there may be a malfunction on the wire harness side.
Reconnect the L10 connector.
Measure the voltage according to the value(s) in the table below.
- Voltage:
Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition MV (g1-1) - Body ground W - Body ground Outer mirror switch signal (Up or Right) Engine switch on (IG), Left/Right adjustment switch R side, Mirror switch OFF→ UP or Right 0 V → 10 to 14 V VC (g1-5) - Body ground R-W - Body ground Power source for mirror position sensor Engine switch OFF → ON (IG) 0 V → 0 to 5 V VSSR (g-6) - Body ground V - Body ground Vertical direction position signal Engine switch on (IG), Left/Right adjustment switch R side, Mirror switch uppermost position → lowermost position 0 V → 1 to 3V MH (g1-9) - Body ground R - Body ground Outer mirror switch signal (Left or Down) Engine switch on (IG), Left/Right adjustment switch R side, Mirror switch OFF→ LEFT or DOWN 0 V → 10 to 14 V M+ (g1-10) - Body ground B - Body ground Outer mirror switch signal (Right or Down) Engine switch on (IG), Left/Right adjustment switch R side, Mirror switch OFF→ RIGHT or DOWN 0 V → 10 to 14 V HSSR (g1-13) - Body ground LG - Body ground Horizontal direction position signal Engine switch on (IG), Left/Right adjustment switch R side, Mirror switch innermost position → outermost position 0 V → 1 to 3 V