REAR AXLE – Special Tools / Troubleshooting <AYC>
27-5
MB990988
Number Name O.D. mm
1 MB990551 Box –
2 MB990989 Base –
3 (MB990990) Tool A 25
(MB990991) Tool B 28
(MB990992) Tool C 31
MB990925
Brass bar
Bar (one-touch type)
Toolbox
Installer adapter
Tool number (MB990925) O.D. mm Tool number (MB990925) O.D. mm
A MB990926 39.0 A MB990933 63.5
MB990927 45.0 MB990934 67.5
MB990928 49.5 MB990935 71.5
MB990929 51.0 MB990936 75.5
MB990930 54.0 MB990937 79.0
MB990931 57.0 B MB990938 –
MB990932 61.0 C MB990939 –
1. BASIC TROUBLESHOOTING CONDITIONS
Before starting the troubleshooting procedure, make sure that the following items have been checked
okay.
D The correct steering wheel has been properly installed in the neutral position of the steering column
shaft.
D Tire and wheel sizes are correct with correct specifications. Inflation pressure, balance, and wear
conditions are okay.
D Wheel alignment is correct.
D The engine, suspension, and other parts have not been remodeled so as to affect the AYC system.
2. DIAGNOSIS FUNCTION
READING THE DIAGNOSIS CODE
Read the diagnosis code using AYC warning lamp.
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