IG Power Source Circuit

STEERING COLUMN: POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM: IG Power Source Circuit

IG Power Source Circuit

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





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT FUSE (ECU-IG RH)
(a) Remove the ECU-IG RH fuse from the cowl side J/B RH.
(b) Check the continuity of the ECU-IG RH fuse.
OK:
Continuity
NG -- REPLACE FUSE
OK -- Continue to next step.

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




(a) Disconnect the K27 connector from the multiplex tilt & telescopic ECU.
(b) Measure the voltage according to the value(s) in the table below.
Voltage:






OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
NG -- Continue to next step.

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




(a) Measure the resistance according to the value(s) in the table below.
Resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

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




(a) Measure the voltage according to the value(s) in the table below.
Voltage:






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)