RX400h · Service Manual BODY

Power Source Circuit

Circuit diagnosis

DESCRIPTION

This is the power source circuit for the outer mirror control ECU.

WIRING DIAGRAM

B111208E06

INSPECTION PROCEDURE


1. INSPECT OUTER MIRROR CONTROL ECU (POWER SOURCE)

  1. B069661E01
    Disconnect the R17 (R18) connector.

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

    Outer mirror control ECU LH:
    Standard voltage:
    Tester Connection
    Condition
    Specified Condition
    R17-3 (BDR) - Body ground
    Always
    10 to 14 V
    R17-7 (CPUB) - Body ground
    Always
    10 to 14 V
    R17-8 (SIG) - Body ground
    Ignition switch ON
    10 to 14 V

    Standard resistance:
    Tester Connection
    Condition
    Specified Condition
    R17-1 (GND) - Body ground
    Always
    Below 1 Ω

    Outer mirror control ECU RH:
    Standard voltage:
    Tester Connection
    Condition
    Specified Condition
    R18-3 (BDR) - Body ground
    Always
    10 to 14 V
    R18-7 (CPUB) - Body ground
    Always
    10 to 14 V
    R18-8 (SIG) - Body ground
    Ignition switch ON
    10 to 14 V

    Standard resistance:
    Tester Connection
    Condition
    Specified Condition
    R18-1 (GND) - Body ground
    Always
    Below 1 Ω



NG
REPAIR OR REPLACE WIRE HARNESS
OK

REPLACE OUTER MIRROR CONTROl ECU


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