POWER TILT AND POWER TELESCOPIC STEERING COLUMN > IG Power Source Circuit

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DESCRIPTION

When the engine switch is turned on (IG), the IG power source circuit supplies positive voltage to the multiplex tilt & telescopic ECU.
The multiplex tilt & telescopic ECU also receives engine switch signals via this circuit.

WIRING DIAGRAM


C106496E01


INSPECTION PROCEDURE

1.INSPECT FUSE (ECU-IG RH)

  1. Remove the ECU-IG RH fuse from the cowl side J/B RH.

  1. Check the continuity of the ECU-IG RH fuse.

    OK:
    Continuity



NG
REPLACE FUSE
OK


2.INSPECT MULTIPLEX TILT & TELESCOPIC ECU (IG TERMINAL VOLTAGE)


    C106463E33

  1. Disconnect the L27 connector from the multiplex tilt & telescopic ECU.

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

    Voltage:
    Tester connection
    (Terminal No.)
    		Condition
    		Specified value
    IG (L27-8) - GND (L27-11)
    		Engine switch on (IG)
    		10 to 14 V



OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
NG


3.CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT & TELESCOPIC ECU - BODY GROUND)


    C106463E34

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

    Resistance:
    Tester connection
    (Terminal No.)
    		Condition
    		Specified value
    GND (L27-11) - Body ground
    		Always
    		Below 1 Ω



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT & TELESCOPIC ECU - COWL SIDE J/B RH)


    C106488E01

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

    Voltage:
    Tester condition
    		Condition
    		Specified value
    DA-1 - Body ground
    		Engine switch on (IG)
    		10 to 14 V



OK
REPAIR OR REPLACE HARNESS OR CONNECTOR (MULTIPLEX TILT & TELESCOPIC ECU - COWL SIDE J/B RH)
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (COWL SIDE J/B RH - BATTERY)