Diagnosis / Troubleshooting
A. With fault code
Special tool
Commercially available tool
Notice
The blinking code of the retarder pilot light (as of Digiprop-Version 1.0) can be used to obtain a read-out from the fault memory.
Furthermore a diagnosis with the PC „DigiDia“ software is possible. In this case please contact VOITH TURBO or a responsible contracting party.
Multimeter recommended: Fluke 87
53.8224.10
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Fault memory read-out via retarder pilot light blinking code
Notice
If several faults have been stored in the memory, they are indicated in the sequence of their occurance, but always only one fault per triggering.
Exception:
The fault „Coding fault“ is not held in the memory but is indicated via the blinking code.
The blinking code can be read-out of the control unit with service cable or retarder stage switch.
Fault memory read-out with service cable (Digiprop-Version 0.2)
Requirements
- Retarder stage switch in position 0
- Vehicle in parking position, Ignition ON
1. Service interface L-lead connected to ground for ≥ 2 s. For this purpose, press push-button of service cable switch.
2. First fault as blinking code output.
3. Repeat from step 2 and 3 for more blinking code outputs.
Meaning
- long blinking signals (2 sec.) tens unit.
- short blinking signals (0,5 sec.) single unit.
Aftersales Service Manual VOITH Retarder 120 Digiprop Page 4.2/9
R
16016
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Troubleshooting
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Digiprop-Version 1.0
The blinking code can be triggered analogous to V 0.2, the conditions are the same. Additionally the blinking code can be triggered with the help of the retarder stage switch during the service function:
1. Shift RSS-Position 0
2. Shift RSS-Position 1 ( ≥ 2 Seconds) 3. Shift RSS-Position 0
4. Blinking code of first fault is indicated
5. Repeat from step 2 to 3 for more blinking code outputs Addition for versions as of V 1.1
There is a break of 3 seconds before and after each blinking code output, during this time the retarder pilot light is switched off.
Display example for fault code 23:
The number of tens will be indicated first as long ON-time: each 2 seconds The number of singles afterwards will be indicated as short ON-time: each 0,5 seconds
Breaks between each ON-time: each 1 second
If a relevant fault is indicated, the retarder pilot light is ON before triggering of the blinking code, the retarder pilot light switches to permanent lighting again after the blinking code.
If there is only one fault in the memory, the retarder pilot light stays OFF after the output.
Aftersales Service Manual VOITH Retarder 120 Digiprop Page 4.2/10
16025
Display example: Fault code 23
E Retarder stage swit ch on A Retarder stage swit ch off
t Time
Diagnosis /
Troubleshooting
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Delete fault memory
No marginal conditions in accordance with read-out of fault memory.
1. Ignition: OFF
2. Service interface L-lead connected to ground. For this purpose, press push-button of service cable switch.
3. Ignition: ON
4. Disconnect after ≥ 2 seconds the L-lead of ground.
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Diagnosis /
Troubleshooting
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Notice
Meaning of entries in „Measurement/test connection“ column: X 1/15 W X 3/11 Pin 15 to plug X1, Multimeter set for Ohms, Pin 11 to plug X3
Table 1:
1) X 1/15 = ground control unit
2) Only, if no fault is recognizable after a complete check of the periphery: change control unit.
Fault Fault text Fault
class
Trigger time Requirement / Operation
Measurement/
test
connection1 )
Result/
Set point
Cause/
Remedy 2)
Code (Check)
01 Stop light relay/
Short circuit to ground
slight 1 s - Ignition: OFF
- Pull plug X3 out of
or consumers
02 LS 1 output
Short circuit to battery
slight 400 ms - Ignition: OFF - Pull plug X1 out of
control unit - Disconnect plug for extra operation
or consumers
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Table 2:
Fault
Fault text Fault class
Trigger time Requirement / Operation
Measurement/
test connection
Result/
slight 1 s - Ignition: OFF
- Pull plug X1 out of control unit
X 1/18 W X 1/
15
With relay installed:
250 - 350 W
Check lead, plugs and relay
or consumers
04 HS 2 output
Short circuit
slight 1 s - Ignition: OFF
- Pull plug X1 out of
or consumers
05 Terminal 15
Undervoltage
serious 60 s - Ignition: OFF - Pull plug X1 out of
control unit - Ignition: ON
X 1/7 V X 1/15 ≥ 17,5 V Check lead, plugs and fuses
06 Terminal 15
Overvoltage
serious 10 s - Ignition: OFF - Pull plug X1 out of
control unit - Ignition: ON - Start engine (idle speed)
X 1/7 V X 1/15 ≤ 32,5 V Checking electrical installation of vehicle (see manufacturer instructions)
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Table 3:
* Fault is in serious class, if temperature sensor for oil and water are defective at the same time.
Fault
Fault text Fault class
Trigger time Requirement / Operation Discontinuity / Short circuit to battery 1039 - 1117W 60°C ± 10 °C = 1099 - 1271W 80°C ± 10 °C = 1271 - 1347W Notice:
The measuring in one temperature range
normally is sufficient.
Check lead and sensor
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Table 4:
* Fault is in serious class, if temperature sensor for oil and water are defective at the same time.
Fault
Fault text Fault class
Trigger time Requirement / Operation
Oil temperature sensor
Discontinuity / Short circuit to battery 1039 - 1117W 60°C ± 10 °C = 1099 - 1271W 80°C ± 10 °C = 1271 - 1347W Notice:
The measuring in one temperature range
normally is sufficient.
Check lead and sensor
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Table 5:
Fault
Fault text Fault class
Trigger time Requirement / Operation
Measurement/
test connection
Result/
Set point
Cause/
Remedy Code (Check)
13 1 Retarder stage
switch Undefined switch state
serious 100 ms - Ignition: ON - Retarder stage switch:
Position 0
X 1/10 V X 1/15
Check lead, plug and retarder stage switch
13 2 - Ignition: ON
- Retarder stage switch:
Check lead, plug and retarder stage switch
13 3 - Ignition: ON
- Retarder stage switch:
Check lead, plug and retarder stage switch
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Table 6:
Fault
Fault text Fault class
Trigger time Requirement / Operation
Measurement/
test connection
Result/
- Retarder stage switch:
Position 3
X 1/10 V X 1/15
Check lead, plug and retarder stage switch
13 5 - Ignition: ON
- Retarder stage switch:
Check lead, plug and retarder stage switch
13 6 - Ignition: ON
- Retarder stage switch:
Position 5
X 1/10 V X 1/15
Check lead, plug and retarder stage switch
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Table 7:
Fault
Fault text Fault class
Trigger time Requirement / Operation
Measurement/
test connection
Result/
Set point
Cause/
Remedy Code (Check)
14 Retarder stage
switch
Short circuit to battery
serious 10 s - Ignition: OFF - Pull plug X1 out of
control unit - Ignition: ON - Retarder stage switch:
Position 0
X 1/10 V X 1/15 0 V Check lead and plug
15 Retarder stage
switch
Short circuit to battery
serious 1 s - Ignition: OFF
- Pull plug X1 out of control unit - Retarder stage switch:
Position 5
X 1/10 W X 1/15 Resistor infinite
Single check of stages for short circuit
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Diagnosis /
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Table 8:
Fault
Fault text Fault class
Trigger time Requirement / Operation
16 Speedometer
signal Discontinuity
serious 2 s - Ignition: ON X 3/2 V X 1/15 ≤==1 V Check lead and speedometer
18 Speedometer
si-gnal
Short circuit to battery
serious 2 s - Ignition: OFF
- Pull plug X3 out of control unit - Ignition: ON
X 3/2 V X 1/15 ≤==9 V Check lead and speedometer
19 ABS
Short circuit to ground
serious 60 s - Ignition: ON X 3/3 V X 1/15 ≥ 3,5 V Check lead, relay and ABS-con-trol unit
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Table 9:
Fault
Fault text Fault
class
Trigger time Requirement / Operation
Measurement/
test connec-tion
Result/
Set point
Cause/
Remedy
Code (Check)
21 ABS-Signal undefined serious 60 s - Ignition: ON X 3/3 V X 1/15 ≥ 16,5 V Check lead,
relay and ABS-control unit
22 Internal fault
ABS-current path
serious 1 s - - − Replace control
unit
23 Proportional valve
Fault No. 1:
Short circuit to battery
serious 1 s - Ignition: OFF
- Pull plug X2 out of control unit - Ignition: ON
X 2/3 V X 1/15 ≤==10 V Check lead
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Diagnosis /
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Table 10:
Fault
Fault text Fault
class
Trigger time Requirement / Operation
24 1 Proportional valve
Fault No. 2:
- Short circuit proportional valve magnetic
- Short circuit connection lead proportional valve - Discontinuity nal valve magnetic
Valve magnetic - Discontinuity tion lead proportional valve
- Short circuit to ground at proportional valve - Prop.- and shift valve
interchanged
serious 1 s - Ignition: ON
- Pull plug X2 out of control unit
X 2/2 W X 2/3 18-25 W Check lead and proportional valve (valve block) valve (valve block)
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Diagnosis /
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Table 11:
Fault
Fault text Fault
class
Trigger time Requirement / Operation valve (valve block)
25 Proportional valve
Fault No. 3:
defective control unit
serious 10 s Replace
control unit
27 Proportional valve
Fault No. 5:
defective control unit
serious 2 s Replace
control unit
28 Terminal 30
Undervoltage
serious 60 s - Ignition: OFF
- Pull plug X1 out of control unit - Ignition: ON
X 1/13 V X 1/15 ≥ 17,5 V Check lead, plug and fuse
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Diagnosis /
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Table 12:
Fault
Fault text Fault
class
Trigger time Requirement / Operation
29 Fault control unit serious 180 ms Replace
control unit
31 Control unit:
Coding fault
serious 100 ms Provide new
parameters for control unit
32 Retarder pilot light:
Discontinuity /
Short circuit to ground
serious 3 s - Ignition: OFF
- Pull plug X3 out of control unit - Ignition: ON
X 3/8 V X 1/15 ≥ 17,5 V Check lead, retarder pilot light and fuse
33 Retarder pilot light:
Short circuit to battery
serious 3 s - Ignition: ON
- Retarder stage switch:
Position 1
X 3/8 V X 1/15 ≤==2 V Check lead and retarder pilot light
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Table 13:
Fault
Fault text Fault
class
Trigger time Requirement / Operation
Measurement/
test connec-tion
Result/
Set point
Cause/
Remedy
Code (Check)
35 Fault control unit serious 500 ms / 123 s Replace
control unit
37 Fault pedal operation slight 100 ms / 1 s Check
installati-on relating to OEM- respectively VOITH-instructions
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Diagnosis /
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