B2620

STEERING COLUMN: POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM: B2620: ECU Power Source Circuit Malfunction
B2620 - ECU Power Source Circuit Malfunction

DESCRIPTION

The ECU power source circuit supplies positive voltage to the multiplex tilt and telescopic ECU.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT FUSE (D MPX-B 1)

(a) Remove the D MPX-B 1 fuse from the main body ECU.

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

Standard resistance:





NG -- REPLACE FUSE
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (MULTIPLEX TILT AND TELESCOPIC ECU - AUXILIARY BATTERY)

(a) Disconnect the L34 multiplex tilt and telescopic ECU connector.





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

Standard voltage:





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

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

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





Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE MULTIPLEX TILT AND TELESCOPIC ECU Removal