Volkswagen Golf / Golf GTI / Jetta. Manual — part 167

01-210

Evaluating display group 20, display zones 1 to 4 and display group 21, display
zones 1 and 2 - Ignition timing retardation cyl. 1 to cyl. 6

Appears on

display

Possible cause

Corrective action

All cylinders

between

8.0...15.0 CA

and at the same

display values

Knock sensor

faulty

Connector

corroded

- Check knock sensors

Page 28-30

Knock sensor

incorrectly
tightened

- Loosen knock sensor and tighten to
20 Nm

Accessories on

engine loose

- Tighten accessories

Poor fuel quality

- Change type of fuel

One cylinder

deviates greatly from

the others

Connector

corroded

- Check knock sensors

Page 28-30

Engine damaged

Repair Manual, 2.8 Liter VR6 4V

Engine Mechanical, Engine Code(s):
BDF; Repair Group 15

- Check compression pressures:

Accessories on

engine loose

- Tighten accessories

Measured value (data) blocks

01-211

Display group 22 - Ignition Knock control cyl. 1 and cyl. 2

While driving

Read measured value
block 22

Indicated on

display

xxxx
rpm

xxx.x

%

xx.x

CA

xx.x

CA

1

2

3

4

Display zones

Specification

Evaluation

Ignition timing
retardation cyl. 2

by knock control

0.0...15.0

CA

Page 01-

214

Ignition timing retardation
cyl. 1

by knock control

0.0...15.0

CA

Page 01-

214

Engine load

12.0...100.0 %

---

Engine speed

640...6500

rpm

---

Notes on display zones 3 and 4:

The displayed value should be 0.0 CA at idling.

Measured value (data) blocks

01-212

Display group 23 - Ignition Knock control cyl. 3 and cyl. 4

While driving

Read measured value
block 23

Indicated on

display

xxxx
rpm

xxx.x

%

xx.x

CA

xx.x

CA

1

2

3

4

Display zones

Specification

Evaluation

Ignition timing
retardation cyl. 4

by knock control

0.0...15.0

CA

Page 01-

214

Ignition timing retardation
cyl. 3

by knock control

0.0...15.0

CA

Page 01-

214

Engine load

12.0...100.0 %

---

Engine speed

640...6500

rpm

---

Notes on display zones 3 and 4:

The displayed value should be 0.0 CA at idling.

Measured value (data) blocks

01-213

Display group 24 - Ignition - Knock control cyl. 5 and cyl. 6

While driving

Read measured value
block 24

Indicated on

display

xxxx
rpm

xxx.x

%

xx.x

CA

xx.x

CA

1

2

3

4

Display zones

Specification

Evaluation

Ignition timing
retardation cyl. 6

by knock control

0.0...15.0

CA

Page 01-

214

Ignition timing retardation
cyl. 5

by knock control

0.0...15.0

CA

Page 01-

214

Engine load

12.0...100.0 %

---

Engine speed

640...6500

rpm

---

Notes on display zones 3 and 4:

The displayed value should be 0.0 CA at idling.

Measured value (data) blocks