A8 Quattro Sedan V8-4.2L (AKB) (2002)
coil, socket
3 + 2
Diode test lamp
should blink (brief pulse)
If the specifications are not obtained:
-
Switch ignition off.
-
Connect test box VAG1598/31 to wiring harness for engine control module. Do not connect to the engine control module itself. Refer to "Scan
Tool Testing/Scan Tool Connecting and Initial Checks/Connecting VAG1598/31 Test Box" See: Computers and Control Systems/Testing and
Inspection
-
Check wiring connection from 4-pin connector on ignition coil (output stage to engine control module for open circuit and short circuit to B+ or
Ground (GND)
Contact 3 on 4-pin connector
for ignition coil (output stage) Contact on VAG1598/31 test box
Cylinder 1
102
Cylinder 2
7
Cylinder 3
111
Cylinder 4
94
Cylinder 5
103
Cylinder 6
110
Cylinder 7
8
Cylinder 8
95
Wiring resistance: 1.5 Ohms maximum
-
Repair any open/short circuit as necessary. If no wiring malfunction is detected:
-
Replace ignition coil with output stage (combined as a single component).
-
Display readiness code. If DTC memory was erased generate readiness code.
Refer to "Monitors, Trips and/or Drive Cycle (Readiness Codes)/Readiness Code" See: Computers and Control Systems/Testing and Inspection
Refer to "Monitors, Trips and/or Drive Cycle (Readiness Codes)/Generating Readiness Code" See: Computers and Control Systems/Testing and
Inspection