Allison Transmission Motorhome Series Operator's Manual page 70

Code Listings And Procedures (WTEC III Controls) (cont'd)
CODES
MAIN SUB
CODE CODE
51 01, 10, 12,
21, 23, 24,
35, 42, 43,
45, 46, 53,
64, 65,
XY*
Offgoing Ratio Test
(During Shift)
52 01, 08, 32,
34, 54, 56,
71, 72, 78,
79, 99,
XY*
Offgoing C3
Pressure Switch Test
(During Shift)
53 08, 09, 18,
19, 28, 29,
38, 39, 48,
49, 58, 59,
68, 69, 78,
99, XY*
Offgoing Speed Test
(During Shift)
*Additional codes could be logged for other shifts where X indicates range
shifted from and Y indicates range shifted to.
Check:
a. Output and turbine speed sensor connectors are
tight, clean, and undamaged.
b. Speed sensor wiring harness has no opens,
shorts-between-wires, or shorts-to-ground.
c. Correct dipstick is installed.
d. Fluid level is correct. Refer to CARE AND
MAINTENANCE section.
Check:
a. Output and turbine speed sensor connectors are
tight, clean, and undamaged.
b. Speed sensor wiring harness has no opens,
shorts-between-wires, or shorts-to-ground.
c. Main wiring harness to transmission has no
shorts-between-wires or shorts-to-ground.
d. Correct dipstick is installed.
e. Fluid level is correct. Refer to CARE AND
MAINTENANCE section.
Check:
a. Turbine and engine speed sensor connectors are
tight, clean, and undamaged.
b. Speed sensor wiring harness has no opens,
shorts-between-wires, or shorts-to-ground.
c. Correct dipstick is installed.
d. Fluid level is correct. Refer to CARE AND
MAINTENANCE section.
QUICK CHECKS
69