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 - Page 1229 of 1313
FIVE INDICATOR LIGHTS FLASHING - Continued
STEP
14.
IS THERE BATTERY VOLTAGE PRESENT AT PINS X AND V ON CTIS WIRING HARNESS CANNON PLUG
AT ECU?
a.
Refer to point to point schematics.
T0432DAA
Figure 14.
CTIS Wiring Harness.
CAUTION
Turn battery switch to OFF position before disconnecting or connecting ECU wiring
harness. Failure to do so may result in damage to ECU.
b.
Turn battery switch to OFF position.
c.
Disconnect CTIS wiring harness cannon plug at ECU.
d.
Set multimeter to measure VDC.
TM 9-2320-272-23-1
0146
0146-16
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