Note. Output Diagnostic Test Mode (DTM) is only possible with the engine not running and ignition switched ON. Output Diagnostic Test Mode (DTM) is aborted if engine is started or an RPM signal is recognized. During output Diagnostic Test Mode (DTM), the individual actuators are activated (approx. 1 minute), or until the next actuator is selected by pressing the --> button. Actuators are checked either acoustically or by touch. The electric Fuel Pump (FP) runs during all of output Diagnostic Test Mode (DTM). Engine must be started before repeating output Diagnostic Test Mode (DTM). (ECM must recognize an engine speed of above 300 RPM).
Output Diagnostic Test Mode (DTM) activates the following components in the specified sequence
- Evaporative Emission (EVAP) canister purge regulator valve -N80- (tank ventilation valve)
- Secondary Air Injection (AIR) solenoid valve -N112
- Secondary Air Injection (AIR) pump relay -J299
- Intake manifold change -over valve -N156
- Bank 2 camshaft adjustment
- Leak Detection Pump (LDP) -V144
- Intake manifold tuning (IMT) valve -2- -N261- (not applicable to S8 vehicles)
- Engine mount 1 at left (direction of travel)
- Engine mount 2 at right (direction of travel)
- Bank 1 camshaft adjustment
- Cylinder 1 fuel injector -N30
- Cylinder 5 fuel injector -N83
- Cylinder 4 fuel injector -N33
- Cylinder 8 fuel injector -N86
- Cylinder 6 fuel injector -N84
- Cylinder 3 fuel injector -N32
- Cylinder 7 fuel injector -N85
- Cylinder 2 fuel injector -N31