TM 9-2320-387-24-l
INSTRUMENTS CIRCUIT
DIAGNOSTIC FLOWCHART
-
KNOWN INFO
WIRE 27C OK
WIRE 27D OK
CIRCUIT BREAKER 1 OK
WIRE 400D OK
SWITCHOK
POSSIBLE
PROBLEMS
WIRING
MOTOR
PCB
IS THERE CONTINUITY FROM
WIRE 57E AT THE HEATER FAN
MOTOR-TO-BODY GROUND?
1. STEXE-R
TEST 91
(Page 2-508)
2. MULTlMElER
REASON FOR OUESTION
This wire provides the motor’s
connection to ground.
I P5 I
I
IF THE PROBLEM CONTINUES,
REPLACE THE HEATER MOTOR.
RETURN TO THE INSTRUMENTS
TEST, PAGE 2-305.
2-364
