Ignition System; Repairing Ignition System; General Notes On Ignition System; Safety Precautions - Volkswagen Amarok 2011 Workshop Manual

4-cylinder injection engine (2.0 l direct injection engine, turbocharger) - Edition 02.2011
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Ignition system

1

Repairing ignition system

General notes on ignition system

Safety precautions

⇒ page 247
Assembly overview - ignition system
Removing and installing ignition coils with output stages
⇒ page 248 .
Spark plug test data ⇒ page 253
1.1 General notes on ignition system
♦ The battery must be disconnected only with ignition switched
off. If a coded radio is installed, ascertain code before discon‐
necting battery.
♦ Observe required procedures after connecting battery ⇒ Elec‐
trical system; Rep. gr. 27 ; Disconnecting and reconnecting
battery.
♦ For trouble-free operation of electrical components, a voltage
of at least 11.5 V is necessary.
♦ After completing work, read fault memory of engine control
unit, clear all fault entries which may have been created during
checks and repairs. If the fault memory was cleared, the read‐
iness code must be generated ⇒ vehicle diagnosis tester
„Guided functions".
♦ If, after fault finding, repairs or component tests, the engine
starts, runs for a short period and then stops, then the fault
may be that the immobilizer is blocking the engine control unit.
In this case, the control unit must be adapted using ⇒ vehicle
diagnosis tester under „Guided functions".
1.2 Safety precautions
To prevent injuries to persons and/or damage to the injection and
ignition system, the following must be observed:
♦ Do not touch or pull off ignition coils with output stage when
engine is running or turning at starter speed.
♦ Switch off ignition before connecting or disconnecting injection
and ignition system wiring as well as test instrument cables.
♦ If the engine has to be turned over at starting speed without it
starting (e.g. compression test), first unplug the connectors
from the ignition coils and the injectors. Read and clear fault
memory after completion of work.
♦ Always switch off ignition before cleaning engine.
♦ Disconnecting and connecting the battery must only be done
with the ignition switched off, otherwise the engine control unit
could be damaged.
Note the following if testers and measuring instruments have to
be used during a road test:
♦ Test and measuring instruments must always be secured to
the rear seat and operated by a second person from this lo‐
cation.
If test and measuring instruments are operated from front pas‐
senger seat and the vehicle is involved in an accident, there is a
⇒ page 247 .
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⇒ page 248 .
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Amarok 2011 ➤
1. Repairing ignition system
247