Figure 2-54. SINGLE "Xu" or Both-RIT-Channels Message For Two-Branch Configuration Flowchart

TM11-5830-263-20&P

STATION CONNECTOR PIN

ARRANGEMENT

START

A = DATA + LINE

B =DATA - LINE

C =SYS PWR GND

D =SYS PWR

USING SYSTEM CONFIG DIAGRAM FOR

E =ANR PWR

YOUR VEHICLE, DETERMINE IF FAULT

F =ANR PWR GND

FFCS/RIT IS LAST ONE IN BRANCH

G =INT ANALOG

END OF

REPLACE DEFECTIVE FFCS/RIT

BRANCH

INDICATED AS FAULT.

YES

SUBSTITUTE KNOWN GOOD FFCS OR

RIT FOR FAULT FFCS/RIT YES

FAULT

REPLACE DEFECTIVE FFCS/RIT

STILL

INDICATED AS FAULT.

EXISTS?

YES

IDENTIFY NEXT FFCS OR RIT IN PATH TO MCS

AND DISCONNECT CABLE LEADING TOWARD

FFCS/RIT INDICATED AS FAULT. MEASURE

VOLTAGE BETWEEN PIN A AND PIN B.

BETWEEN

YES

REPLACE MEASURED BOX

16V AND

+16V

AT ABOVE CONNECTOR, MEASURE

VOLTAGE BETWEEN PIN D AND PIN C.

24 VOLTS

REPLACE MEASURED BOX

PRESENT

YES

CHECK CONTINUITY OF ALL

CABLES/MOSs BETWEEN MEASURED

BOX AND SUBSTITUTED BOX.

ALL OK?

REPLACE DEFECTIVE CABLE/MOS

YES

PROBLEM IS IN VEHICLE WIRING

(E.G., SLIP RING)

Figure 2-54. SINGLE "Xu" or Both-RIT-Channels Message For Two-Branch Configuration

Flowchart

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