FOX 2004 ➤
3 - Cyl. injection engine - Edition 12.2009
28 – Ignition system
1
Ignition system - repair
General indications about the ignition system
♦ The Engine control unit -J623- is equipped with self-diagnosis.
♦ Minimum voltage of 11.5V is necessary for the perfect opera‐
tion of electric components.
♦ In certain checks, the Engine control unit -J623- might identify
a fault and record it on the memory. For that reason, at the end
of all check and repair works, check the fault memory and
erase it, if necessary.
lk
Ignition system components - remove and install ⇒ page 109 .
Ignition coils with final power stages - remove and install
⇒ page 110 .
Safety measures ⇒ page 111 .
Test data, Spark plugs -Q- ⇒ page 112 .
1.1
Ignition system components - remove and install
1 - Ignition coil 1 with power fi‐
nal stage -N70-
❑ Ignition coil 2 with power
final stage -N127-
❑ Ignition coil 3 with power
final stage -N291-
❑ Remove and install with
Puller -T 10094-
⇒ page 110 .
2 - Ignition coil connector
❑ Black, 4 poles.
3 - Knock sensor 1 -G61- con‐
nector
❑ Black, 2 poles.
❑ Golden connector con‐
tacts.
4 - 20 Nm
❑ Tightening torque influ‐
ences Knock Sensor 1 -
G61- operation.
5 - Knock sensor 1 -G61-
❑ Golden connector con‐
tacts.
6 - 10 Nm
7 - Connector
❑ Black, 3 poles.
❑ For Hall Sensor -G40- .
8 - Hall Sensor -G40-
9 - Sealing ring
❑ Replace if damaged
1. Ignition system - repair
109
English 
