$ &'()(*+
$
,
<9 *-027*01/ 05*.6*H+9 /*. 9H<1F10 *.; 2, 0<9 ,2++2>
1.= 6;7:0276) .2169 25 ?1F5*012. 16 =9.95*098E 5*.6
716612. ,+-18 +9*C6E 0<9 ?9<1/+9 8296 .20 72?9
,25>*58 25 F*/C>*58 <9 /*-696 2, 0<969 6;7:0276
/2-+8 /279 ,527) ./2559/0 72-.01.=E 0<9 5*.6716
612. ,+-18 7*; F9 +2>E 25 * /27:2.9.0 2, 0<9 05*.
6*H+9 7*; F9 ,*-+0;
<9 ,2++2>1.= 10976 *59 6-6:9/098 *6 /*-696 ,25 0<9
052-F+96) 7*+,-./012. 2, 0<9
%E 0<9
69.6256E 0<9 6>10/<96E 0<9 <*5.966 25 /2..9/0256
Gather information from customer.
Check the transmission fluid.
Verify complaint.Replace or replenish the
transmission fluid.
Communication with the scan tool
MB991958 (MUT-III sub assembly)
not possible in Symptom Chart. Read the diagnostic trouble code.
Erase the diagnostic trouble code.
Check symptom.
Perform the repair.
Road test
Recheck diagnostic trouble codes
which were read before road test.
To DIAGNOSTIC TROUBLE CODE
CHARTTo SYMPTOM CHART
Search for cause.
Repair
Confirmation test (road test)INTERMITTENT MALFUNCTIONS
(Refer to GROUP 00, How to Use
Troubleshooting/Inspection
Service Points.)
CompletedNG
OK
Communication with the scan tool
MB991958 (MUT-III sub assembly)
not possible
Diagnostic trouble code
displayed.No diagnostic trouble code
displayed.
Abnormality exists (no diagnostic
trouble code)
Abnormality exists
(diagnostic trouble
code present)No abnormality
No diagnostic trouble code
displayed. Diagnostic trouble code
displayed.
FoundNot found
OK
OK NG
AC210189
NG
AB
