In case of complaints regarding starting or during engine warm-up, do not bring engine to operating temperature but proceed according to the complaint. Reading and clearing Diagnostic Trouble Code (DTC) see section "0".

Test Steps

1	Test equipment	connect/disconnect according to connection diagram.
2	Engine coolant level	check, correct.
3	Engine oil level	check, observe condition of oil (visual test).
4	Control module version (Ignition: ON )	read, only possible using HHT (Test and Adjustment Data, section A)
5	DTC's in IFI control module (Ignition: ON )	read using impulse counter scan tool or HHT (Test and Adjustment Data, section A)
6	Throttle control linkage	check for free movement and condition.
6.1	Wide open throttle stop or IFI accelerator pedal position sensor 100%	check using accelerator pedal, adjust with HHT (see SMS 30 - 1010).
6.2	Closed throttle (idle) stop on IFI accelerator pedal position sensor	check, adjust with HHT (see SMS 30 - 1010).
6.3	Control pressure cable (AT) until 05/96	check, adjust (see SMS 30 - 1010).
7	Engine speed (CTP)	check, only possible using HHT (Test and Adjustment Data, section A)
8	Start of delivery or GI value	check, not possible with HHT (Test and Adjustment Data, section A)
9	Engine coolant temperature	check, only possible using HHT (Test and Adjustment Data, section A)
10	Fuel rack travel	check, only possible using HHT (Test and Adjustment Data, section A)
11	Fuel temperature	check, only possible using HHT (Test and Adjustment Data, section A)
12	Shift selector lever position P/N	check, only possible using HHT
13	Closed throttle position contact	check, only possible using HHT (Test and Adjustment Data, section A)
14	IFI accelerator pedal position sensor	check, only possible using HHT (Test and Adjustment Data, section A)
15	Injection quantity/stroke	check, only possible using HHT (Test and Adjustment Data, section A)
16	Stop lamp switch	check, only possible using HHT (Test and Adjustment Data, section A)
17	EGR	check, only possible using HHT (Test and Adjustment Data, section A)
18	Pressure control flap	check, only possible using HHT (Test and Adjustment Data, section A)
19	Intake line resonance flap	check, only possible using HHT (Test and Adjustment Data, section A)
20	Intake manifold resonance flap	check, only possible using HHT (Test and Adjustment Data, section A)
21	Intake manifold pressure	check, only possible using HHT (Test and Adjustment Data, section A)
22	Barometric pressure	check, only possible using HHT (Test and Adjustment Data, section A)
23	Maximum no-load engine speed	check, (Test and Adjustment Data, section A)
24	Engine running at CTP	check with selector lever in position "D" (parking and service brake applied) and consumers turned on.
25	Activations, complete EGR system incl. electrohydraulic actuator	check, only possible using HHT
26	Activation of resonance air intake system	check, only possible using HHT

Special Tools

Conventional tools, test equipment

Description	Brand, model, etc.
For use with adaptor: Engine analyzer 1)	Bear DACE

1) Available through the MBUSA Standard Equipment Program.