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On-Off Ratio Test

ON-OFF RATIO TEST, IGNITION: ON

On-Off Ratio % See
0 Fig 1
10 Fig 1
20 Fig 1
30 Fig 1
40 -
50 Fig 1
60 Fig 1
70 Fig 1
80 Fig 1
90 Fig 1
ON-OFF RATIO TEST, ENGINE: AT CTP (IDLE)

On-Off Ratio % See
0 Fig 2
10 Fig 2
20 Fig 2
30 Fig 2
40 Fig 2
50 Fig 2
60 Fig 2
70 Fig 2
80 Fig 2
90 Fig 2
95 Fig 2
100 Fig 2
LH-SFI CONTROL MODULE DTC READOUT

DTC See
1 Fig 3
2 Fig 3
3 Fig 3
4 Fig 3
5 -
6 -
7 Fig 3
8 Fig 3
9 Fig 3
10 Fig 3
11 Fig 3
12 Fig 3
13 Fig 3
14 -
15 -
16 Fig 3
17 Fig 3
18 Fig 3
19 -
20 Fig 3
21 Fig 3
22 Fig 3
23 Fig 3
24 Fig 3
25 Fig 3
26 Fig 3
27 Fig 3
28 Fig 3
Fig 1: Diagnostic Trouble Code Definitions - On-Off Ratio Test, Ignition: ON
G00222856Courtesy of MECHANICS MONTHLY MAGAZINE
Fig 2: Diagnostic Trouble Code Definitions - On-Off Ratio Test, Engine: At CTP (Idle)
G00222857Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Fig 3: Diagnostic Trouble Code Definitions - LH-SFI Control Module DTC Readout (Codes 1-28)
G00222858Courtesy of MERCEDES-BENZ OF NORTH AMERICA.