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

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DESCRIPTION

When the ignition switch is turned to the ON position, the IG power source circuit supplies positive voltage to the multiplex tilt & telescopic ECU.
The multiplex tilt & telescopic ECU also receives ignition switch signals via this circuit.

WIRING DIAGRAM


C104136E15


INSPECTION PROCEDURE

1.INSPECT FUSE (ECU-IG NO.1 FUSE)

  1. Remove the ECU-IG No.1 fuse from the driver side J/B.

  1. Check the continuity of the ECU-IG No.1 fuse.

    OK:
    There is continuity.



NG
REPLACE FUSE
OK


2.CHECK HARNESS AND CONNECTOR (BETWEEN MULTIPLEX TILT & TELESCOPIC ECU AND BATTERY)


    C106463E19

  1. Disconnect the T4 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 (T4-8) - Body ground
    		Ignition switch on
    		10 to 14 V



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


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


    C106463E26

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

    Resistance:
    Tester connection
    (Terminal No.)
    		Condition
    		Specified value
    GND (T4-11) - Body ground
    		Always
    		Below 1 Ω



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE