3
DIAGNOSTICS
Automatic gearbox CF65/75/85 series
5-8
Main code Sub-code RECOMMENDED PROCEDURES
Transmission ratio test immediately after changing gear
54 01,07
10,12
17,21
23,32
34,43
45,54
56,65
70,71
80,81
83,85
86,92
93,95
96,97
Check the following points:
a. Output shaft engine speed sensor and rev sensor are connected.
The connectors are undamaged and clean.
b. No interruptions or short circuits between wires or earth in sensor
wiring.
c. Let the engine idle in neutral while the vehicle is on the brake.
Check the following points:
1. Specified dip stick.
2. Oil level.
If all points are in order, contact your Allison dealer.
Pressure in coupling 3 immediately after changing gear.
55 17
87
97
Check the following points:
a. Output shaft engine speed sensor and rev sensor are connected.
The connectors are undamaged and clean.
b. No interruptions or short circuits between wires or earth in sensor
wiring.
c. Let the engine idle in neutral while the vehicle is on the brake.
Check the following points:
1. Specified dip stick.
2. Oil level.
d. Check that there is no interruption or short circuit between the wiring
or earth connection in the coupling 3 pressure switch wiring.
e. Check the following points:
1. Main connector is properly connected, is clean and undamaged.,
2. ECU connector is properly connected, is clean and undamaged.
3. Rev sensor is properly connected, is clean and undamaged.
If all points are in order, contact your Allison dealer.
Range test
56 00
11
22
33
44
55
66
77
Check the following points:
a. Output shaft engine speed sensor and rev sensor are connected.
The connectors are undamaged and clean.
b. No interruptions or short circuits between wires or earth in sensor
wiring.
c. Let the engine idle in neutral while the vehicle is on the brake.
Check the following points:
1. Specified dip stick.
2. Oil level.
If all points are in order, contact your Allison dealer.
1
ᓻ 200337
https://www.truck-manuals.net/
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