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Diagnostic Manual, Engines, Volume 1

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LOCATION:    B.2 Test and Adjustment Jobs    >   42 Idle Test, Adjustment


B 2 Idle Test, Adjustment

Listing of Test Steps

1 Test equipment connect/disconnect according to connection diagram
2.0 Throttle control linkage check throttle valve for free movement and condition. Lubricate bearings, gate levers and ball sockets.
2.1 CTP contact 1) check, adjust (see SMS, Job No. 30 - 1010).
3 Ignition timing Engine: at Idle check (see Test and Adjustment Data, section A).
4 Engine rpm (at closed throttle) check, only possible using HHT (see Test and Adjustment Data, section A).
5 On-off ratio control check only possible using HHT (see Test and Adjustment Data, section A).
5.1 CTP contact check, (HHT display "ON" only with HHT).
5.2 Not applicable for U.S. version vehicles  
7 CTP speed under load check in TR "D" (with service and parking brake
applied) and with all consumers turned on.
1) Only possible with HHT.

Equipment

Engine analyzer 1) Bear DACE (Model 40-960)
Sun MEA-1500MB
Hand-Held Tester (HHT) see applicable Service Information in groups 58 and 99
1) Available through the MBUSA Standard Equipment Program.