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Notes on ignition circuit shutoff test - AH07.00-P-3004-03WA

ENGINE 113.944 in MODEL 202 

ENGINE 113.941/960 in MODEL 220 

ENGINE 113.942 in MODEL 163 

ENGINE 113.961 in MODEL 129 

ENGINE 113.943 in MODEL 208 

ENGINE 113.940/980 in MODEL 210 

IMPORTANT

IMPORTANT

The ignition-circuit shutoff is only possible for engine 113. To localize a fault, switch off ignition circuit for max. 20 s. If an ignition circuit is switched off for more than 20 s, faults are stored in the fault memory (e.g. misfires, CAT damaging, oxygen 2 -sensor upstream of CAT). In this case, delete the fault memory.

Fig 1: Identifying Ignition Circuit Shutoff Pass Image
G10037426Courtesy of MERCEDES-BENZ USA
Fig 2: Identifying Ignition Circuit Shutoff Fault Profile
G10037427Courtesy of MERCEDES-BENZ USA

Ignition circuit shutoff pass image 

Ignition circuit shutoff fault profile 

Ignition circuit b shutoff, and fault on cylinder 5 in ignition circuit a