DAF CF65, CF75, CF85 Series . Manual — part 291
3
CF65/75/85 series
Automatic gearbox
DIAGNOSTICS
5-5
Main code
Sub-code
RECOMMENDED PROCEDURES
Coupling 3 pressure switch open
32
00
33
55
77
1. Let the engine idle while the vehicle’s parking brake is applied.
Check the following points:
a. Specified dip stick.
b. Correct oil level.
2. Check the following points:
a. Gearbox main connector is connected, is firmly attached, is clean
and undamaged.
b. ECU connector is connected, is firmly attached, is clean and
undamaged.
c. No interruptions or short circuits between wires or earth in wiring
harness.
If all points are in order, contact your Allison dealer.
Sensor fault in gearbox oil sump
33
12
23
Check the following points:
a. Gearbox main connector is connected, is firmly attached, is clean
and undamaged.
b. ECU connector is connected, is firmly attached, is clean and
undamaged.
c. No interruptions or short circuits between wires or earth in wiring
harness.
If all points are in order, contact your Allison dealer.
EEPROM fault
34
12
13
14
15
16
1. Re-calibrate if possible.
2. If re-calibration is impossible, replace the ECU.
3. If ECU replacement is impossible, contact your Allison dealer.
EEPROM writing error as a result of loss of power supply
35
00
16
Check the following points:
a. ECU is firmly attached, clean and undamaged.
b. VIM (Vehicle Interface Module) is firmly attached, clean and
undamaged.
c. The vehicle manufacturer has used the specified wiring for power
supply and earth connection.
d. Battery positive pole.
e. Battery earth connection.
f.
Specified connections for vehicle ignition.
If all points are in order, contact your Allison dealer.
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3
DIAGNOSTICS
Automatic gearbox
CF65/75/85 series
5-6
Main code
Sub-code
RECOMMENDED PROCEDURES
Hardware/software not compatible
36
00
1. Replace ECU if possible.
2. Re-program ECU if possible.
3. If replacement or re-programming is not possible, contact your
Allison dealer.
Interruption or short circuit in electromagnetic valve circuit
41
12
13
14
15
16
20
22
23
24
25
26
Check the following points:
a. Gearbox main connector is connected, is firmly attached, is clean
and undamaged.
b. ECU connector is connected, is firmly attached, is clean and
undamaged.
c. Visual inspection of the wiring harness: no damage, no chafed or too
taut wires, no screws through the wiring harness.
d. No interruptions or short circuits between wires or earth in wiring
harness.
Replace wiring harness if necessary.
If all points are in order, contact your Allison dealer.
Short circuit in the electromagnetic valve circuit to the battery
42
12
13
14
15
16
21
22
23
24
25
26
Check the following points:
a. Gearbox main connector is connected, is firmly attached, is clean
and undamaged.
b. ECU connector is connected, is firmly attached, is clean and
undamaged.
c. Visual inspection of the wiring harness: no damage, no chafed or too
taut wires, no screws through the wiring harness.
d. No interruptions or short circuits between wires or earth in wiring
harness.
e. Replace wiring harness if necessary.
f.
Incompetent repairs.
If all points are in order, contact your Allison dealer.
ECU circuits
43
21
25
26
1. Replace the ECU.
2. Contact your Allison dealer.
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CF65/75/85 series
Automatic gearbox
DIAGNOSTICS
5-7
Main code
Sub-code
RECOMMENDED PROCEDURES
Transmission ratio test on the gear to be changed from (during shifting).
51
01
10
12
21
23
45
65
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.
Coupling 3 pressure switch fails to register pressure drop during shifting
52
01
08
32
34
54
56
71
78
79
99
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 wires or
earth connection in the main wiring harness to the gearbox.
If all points are in order, contact your Allison dealer.
Engine and turbine rev test when engaging neutral
53
08
18
28
29
38
39
48
49
58
59
68
69
78
99
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.
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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.
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