key VOLKSWAGEN JETTA 1998 Repair Manual

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-
Press key.
Output Diagnosic Test Mode
-
Release brakes
Indicated on display
- Remove foot from brake pedal.
-
Press key.
Output Diagnosic Test Mode
-
Operate brakes
Indicated on display
- Operate brake pedal.
-
Press key.
Output Diagnosic Test Mode
-
IRR: 0V ORR: 0V Wheel RR locked
Indicated on display
Note:
If the wheel does not lock, there is a
possibility that there is a malfunction in the
mechanical/hydraulic part of the brake
system. - Indicate to 2nd mechanic which wheel
requires turning by hand.
Стр. 26из 129 On Board Diagnostic (OBD), performing

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-
Press key.
Output Diagnosic Test Mode
-
IRR: VBAT ORR: 0V Wheel RR locked
Indicated on display
ABS hydraulic pump -V64- must run.
Brake pedal must not give
If the brake pedal gives, there is a
malfunction in the hydraulic unit. In this
case the hydraulic unit must be replaced.
Repair Manual, Brake System, Repair
Group 45 -
Press key.
Output Diagnosic Test Mode
-
IRR: VBAT ORR: VBAT Wheel RR free
Indicated on display
Note:
If the wheel locks there is a possibility that
the brake lines to the wheel
calipers/cylinders have been interchanged. - Indicate to 2nd mechanic which wheel
requires turning by hand.
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-
Press key.
ABS hydraulic pump -V64 no longer runs.
Output Diagnosic Test Mode
-
IRR: VBAT ORR: 0V Wheel RR free
Indicated on display
Brake pedal must give perceptibly
If the brake pedal does not give, there is a
malfunction in the hydraulic unit. In this
case the hydraulic unit must be replaced.
Repair Manual, Brake System, Repair
Group 45 -
Press key.
Output Diagnosic Test Mode
-
IRR: 0V ORR: 0V Wheel RR locked
Indicated on display
Note:
If the wheel does not lock, there is a
possibility that there is a malfunction in the
mechanical/hydraulic part of the brake
system. - Indicate to 2nd mechanic which wheel
requires turning by hand.
Стр. 28из 129 On Board Diagnostic (OBD), performing

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-
Press key.
Output Diagnosic Test Mode
-
Release brakes
Indicated on display
- Remove foot from brake pedal.
-
Press key.
Output Diagnosic Test Mode
-
EDL valves/Hyd-P: VBAT Wh FL/FR locked
Indicated on display (vehicles with EDL)
A 2nd mechanic is required to rotate the
respective wheel by hand.
If the wheels do not lock, there is a
malfunction in the hydraulic part of the ABS
system. In this case the hydraulic unit must
be replaced.
Repair Manual, Brake System, Repair
Group 45
Стр. 29из 129 On Board Diagnostic (OBD), performing

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-
Press key.

The ABS warning light -K47- goes out.
Function is unknown or
cannot be carried out at the moment
Indicated on display
The final control diagnosis is completed
-
Press key.
Rapid data transfer HELP
Select function XX Indicated on display
Note:
There is a malfunction in the system if
the ABS warning light -K47- does not go
out.
Adhere exactly to test sequence: First
check DTC memory, then erase.
- End output (Function 06) Page 01
-
231 .
Стр. 30из 129 On Board Diagnostic (OBD), performing

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Diagnostic Trouble Code (DTC) table
Note:

When beginning On Board Diagnostic (OBD) troubleshooting of the vehicle control modules,
always start with function "Automatic test sequence" by pressing keys 0 and 0 because the
control modules are interconnected with a data bus wire. This checks the DTC memories of
the control modules in the vehicle.

All the possible DTCs which can be recognized by the ABS control module (w/EDL) -J104-
and printed-out on V.A.G 1551 or VAS 5051, are listed on the following pages according to
the 5 digit DTC code.

DTC code appears (in the "Rapid data transfer" mode) only on the print-out.
Example:


DTC code P code DTC code
5 digit 5 digit 3 digit
18256 P1848 035

The 5 digit P code which may appear next to the DTC code, is for use with the On Board
Diagnosis (OBD) and may be disregarded.

The 3 digit DTC type code is a data code and may be disregarded, but the DTC type text is
of use.

Before replacing components indicated as being faulty, check all the appropriate
connectors, wiring and Ground connections using the wiring diagram.
Electrical Wiring Diagrams, Troubleshooting & Component Locations binder.
On completion of repairs always check the DTC memory with V.A.G 1551 scan tool or the
VAS 5051 and erase.

Carry out road test exceeding 20 km/h (13 mph).

After the road test check DTC memory again.
Стр. 31из 129 On Board Diagnostic (OBD), performing

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Diagnostic Trouble Code (DTC)
memory, erasing and ending output


Note:
All functions which could previously be
performed with V.A.G 1551 can now also
be carried out with the tester VAS 5051.

Prerequisites:

DTC memory checked Page 01-
170 .

1. Erasing DTC memory

-
Press key.
Rapid data transfer HELP
Select function XX Indicated on display:
- Press keys -0- and -5-; 05 enters the
"Erase DTC memory" function.
Rapid data transfer Q
05 Erase DTC memor
y
Indicated on display:
- Confirm entry with Q key
Rapid data transfer
DTC memory is erased!
Indicated on display:
-
Press key.
Rapid data transfer HELP
Select function XX Indicated on display:
Стр. 72из 129 On Board Diagnostic (OBD), performing

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Warning!
DTC memor
y was not interrogated.
Indicated on display:
Note:
Adhere exactly to test sequence: First
check DTC, then erase
2. Ending output
- Press keys -0- and -6-, this ends the
output.
Rapid data transfer Q
06 - End out
put
Indicated on display
- Confirm input with Q key.
Rapid data transfer HELP
Select function XX Indicated on display:
ABS warning light -K47- must go out after
approx. 2 seconds. - Switch off ignition.
- Disconnect Connection to V.A.G 1551
scan tool.
- Switch on ignition.
Стр. 73из 129 On Board Diagnostic (OBD), performing

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Test sequence

- Connect V.A.G 1551 scan tool and select
(address word 03) brake electronics control
module with ignition switched on; Page 01
-
163 .

- Establish engine code.
Rapid data transfer HELP
Select function XX Indicated on display:
- Input 07 for the function "Code control module"
and confirm with Q key.
Rapid data transfer Q
07 - Code control module Indicated on display:
- Confirm input with Q key.
Coding control module Q
Enter code number XXXXX
(0-32000)
Indicated on display:
- Enter the relevant code number for this vehicle
and confirm with Q key.
Coding variations Page 01
-236 .
1C0 907 379E ESP FRONT MK60 0103
Coding 0011266 WSC 00000
On the display the control module identification and
coding are displayed , e.g.:
Стр. 75из 129 On Board Diagnostic (OBD), performing

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- Connect V.A.G 1551 scan tool and select
(address word 03) brake electronics control
module with ignition switched on; Page 01
-
163 .
Rapid data transfer HELP
Select function XX Indicated on display:
- Press keys 0 and 8. (The function "Read
measured value block" is initiated with 08.)
Rapid data transfer Q
08 - Read measured value block Indicated on display:
- Confirm entry with key Q.
Read measured value block
Enter displa
y group number XXX
Indicated on display:
- Enter display group number. List of selectable
display group numbers Page 01
-242 .
Стр. 83из 129 On Board Diagnostic (OBD), performing