3
DIAGNOSTICS
Automatic gearbox CF65/75/85 series
5-4
Main code Sub-code RECOMMENDED PROCEDURES
Temperature in the gearbox sump too low
24 12 Check the following points:
a. Temperature is lower than -6°C.
1) If this is the case, it is a normal response to the ambient
temperature.
2) If not, check whether the main gearbox is firmly connected and
that the connectors are undamaged.
If all points are in order, contact your Allison dealer.
Temperature in the gearbox sump too high
24 23 1. Run the engine at idling speed.
2. Ensure that the vehicle is entirely horizontal.
3. Check whether the correct dip stick has been installed.
4. Check the oil level.
5. If necessary, correct the oil level.
6. If the oil level is in order, check whether the engine system has
overheated, causing the gearbox to overheat.
7. Check that the ECU and gearbox connectors are correctly
connected, firmly attached and undamaged.
If all points are in order, contact your Allison dealer.
Output shaft speed sensor
25 00
11
22
33
44
55
66
77
Check the following points:
a. Connector is connected.
b. Sensor bolt is firmly attached.
c. ECU is firmly attached with no damaged connectors.
d. Oil level.
e. No interruptions or short circuits between wires or earth in wiring
harness to sensor.
If all points are in order, contact your Allison dealer.
1
ᓻ 200337
https://www.truck-manuals.net/
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