Suzuki XL7 2007 Service Manual page 68

0A-55 General Information:
DTC DTC Descriptor
Lost Communications With
U2106
Transmission Control System
Lost Communications With Body
U2107
Control System
Lost Communication With Yaw Rate
U2142
Sensor (YRS)
Lost Communications With Steering
U2143
Angle Sensor (SAS)
Diagnostic Starting Point - Vehicle
Diagnostic Information
Begin the system diagnosis with "Diagnostic System
Check - Vehicle Diagnostic Information". The Diagnostic
System Check - Vehicle will provide the following
information:
• The identification of the control modules which are not
communicating through the serial data circuit.
• The identification of any stored diagnostic trouble
codes (DTCs) and their status.
The use of the Diagnostic System Check - Vehicle will
identify the correct procedures to begin vehicle
diagnosis. These must be performed before system DTC
or symptom diagnosis.
Diagnostic Starting Point - Vibration
Diagnosis and Correction
The information contained in this Vibration Diagnosis
and Correction section is designed to cover various
vehicle designs and configurations. Not all content will
apply to all vehicles.
NOTE
The following steps must be completed
before using the analysis tables or the
symptom tables.
1. Perform the "Vibration Analysis - Road Testing" table
before using the other Vibration Analysis tables or
the Symptom tables in order to effectively diagnose
the customer's concern.
The use of Vibration Analysis - Road Testing will first
provide duplication of virtually any vibration concern
and then identify the correct procedure for
diagnosing the area of concern which has been
duplicated.
Module that
Sets the DTC
"DTC U2105-U2199 (Except U2142 and
EBCM U2143): " "DTC U2105-U2199 (U2142 or U2143
only): "
"DTC U2105-U2199 (Except U2142 and
EBCM U2143): " "DTC U2105-U2199 (U2142 or U2143
only): "
"DTC U2105-U2199 (Except U2142 and
EBCM U2143): " "DTC U2105-U2199 (U2142 or U2143
only): "
"DTC U2105-U2199 (Except U2142 and
EBCM U2143): " "DTC U2105-U2199 (U2142 or U2143
only): "
2. Review the following Vibration Diagnostic Process.
3. Review the general descriptions to familiarize
yourself with vibration theory and terminology, the J
38792-A, Electronic Vibration Analyzer (EVA) 2 and
the J 38792-VS, Vibrate Software. Reviewing this
information will help you determine whether the
condition described by the customer is a potential
operating characteristic or not.
Refer to the following:
– "Vibration Theory and Terminology"
– "Electronic Vibration Analyzer (EVA) Description
and Operation"
– "Vibrate Software Description and Operation"
– "Reed Tachometer Description"
Vibration Diagnostic Process
NOTE
Using the following steps of the vibration
diagnostic process will help you to
effectively narrow-down and pin-point the
search for the specific source of a vibration
concern and to arrive at an accurate repair.
1. Gather specific information on the customer's
vibration concern.
2. Perform the road testing steps in sequence as
identified in Vibration Analysis - Road Testing in
order to duplicate the customer's concern and
evaluate the symptoms of the concern under
changing conditions. Observe what the vibration
feels like and what it sounds like. Observe when the
symptoms first appear, when they change, and when
they cease.
Diagnostic Procedure