TM-9-2320-272-23-1

TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 1 OF 5

SEPTEMBER 2012
TM-9-2320-272-23-1

  TM-9-2320-272-23-1 - Page 1228 of 1313

FIVE INDICATOR LIGHTS FLASHING - Continued
e.
Disconnect CTIS wiring harness cannon plug at ECU.
f.
Disconnect electrical lead at pressure transducer.
g.
Set multimeter to measure resistance.
h.
Connect multimeter red lead to pressure transducer.
i.
Connect multimeter black lead to pressure transducer lead at ECU cannon plug.
j.
Meter reading should be less than 200 ohms.
CONDITION/INDICATION
IS THERE CONTINUITY BETWEEN PRESSURE TRANSDUCER AND ECU CANNON PLUG?
DECISION
YES - Go to Step (14).
NO - Replace CTIS Wiring Harness (Volume 2, WP
0322). Go to Step (17) to verify problem is solved.
TM 9-2320-272-23-1
0146
0146-15


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