S80 T6 L6-2.9L Turbo VIN 91 B6294T (2002)
The ignition coils ignite the fuel / air mixture on command from the engine control module (ECM). The signal is re-transmitted so that the control
module knows that it worked.
Each ignition coil has its own integrated power stage.
The ignition coils are in the sparkplug wells above each spark plug.
The ignition windings can be diagnosed by the Engine control module (ECM) and can be activated using VIDA.
Emissions warning lamp
The emissions warning lamp in the Driver Information Module (DIM) has a warning symbol. This warning symbol varies depending on the market and
model year. The warning symbols are:
-
"Engine symbol" (not USA, model year 2001-)
-
"CHECK ENGINE" (MIL - Malfunction Indicator Lamp, USA only).
-
"Lambda symbol" (not USA, model year 1999-2000).
The warning symbol lights when the ignition key is turned to position II and goes out when the engine is started if the engine management system does
not detect any faults.
The warning lamp is directly connected to the engine control module (ECM).
The warning lamp will light if there is a fault in one of the monitored parameters in the engine management system. The warning lamp will also light in
response to a request transmitted via the Control area network (CAN) if there is a fault in one of the following systems which affects emissions:
-
gearbox control module (TCM)
-
brake control module (BCM)
