Circuit/System Verification; Circuit/System Testing; Component Testing; Repair Instructions - Suzuki XL7 2007 Service Manual

0A-35 General Information:

Circuit/System Verification

The diagnostic format does not force a technician to any
of the 3 diagnostic categories (Circuit/System
Verification, Circuit/System Testing and Component
Testing). However, performing the Circuit/System
Verification category first, aids in determining if a vehicle
condition is current. This category also serves to route
the technician to another diagnostic procedure which
should be performed first; for example, a DTC with a
higher priority.
Circuit/System Verification is a non-intrusive procedure
outlining how to verify that a system or a portion of a
system is functioning correctly. During the verification
process, the vehicle is kept intact and tested as a
complete system. This verification is used to assist the
technician in determining whether a condition is current
or intermittent. When a condition is determined to be
intermittent, a technician can use the link in Electrical
Information Reference: "Testing for Intermittent
Conditions and Poor Connections: ".
The technician should be able to identify if the fault is
occurring on the input circuit - signal or on the output
circuit - control when applicable. The technician will need
to decide from the verification results if the system is
working correctly or if further diagnosis needs to be
performed in either Circuit/System Testing and/or

Component Testing.

Circuit/System Testing

The diagnostic format does not force a technician to any
of the 3 diagnostic categories (Circuit/System
Verification, Circuit/System Testing and Component
Testing). However, beginning with the Circuit/System
Verification category aids in determining if a vehicle
condition is current.
Circuit/System Testing is a step by step, positive-flow,
testing sequence which allows the technician to perform
each test step, in sequence, until a fault is detected. If
the result of a test step is achieved, the normal flow is to
proceed to the next step. If the result is NOT achieved,
the repair arrow bullet will identify what actions need to
take place.
Intrusive diagnostics are performed to locate the system
fault. System harness connections are disconnected
from the module or component to test individual circuit
functions. The module or component will be used to
assist in verifying the circuit function. When a test does
not pass, the repair steps will indicate what circuit faults
to test. For example, short to voltage, short to ground or
open/high resistance.
When testing for individual circuit faults, the technician is
expected to include terminal inspections such as
connection surfaces and terminal tension at both the
harness and component/module. Additionally, a
technician can use the links in Electrical Information
Reference: "Testing for Intermittent Conditions and Poor
Connections: " or "Circuit Testing: ".
The control modules and components will also be
diagnosed during these test steps. A retest of a control
module or component should always be performed
before replacement. For example, re-connect all
components and modules and retest the system to verify
the condition still exists before replacing modules or
components.
Component Testing
The diagnostic format does not force a technician to any
of the 3 diagnostic categories (Circuit/System
Verification, Circuit/System Testing and Component
Testing). However, beginning with the Circuit/System
Verification category aids in determining if a vehicle
condition is current.
Component Testing can offer static and/or dynamic
component tests. These tests can be used to verify if a
component is operating correctly to avoid unnecessary
replacement.
Testing modules in this category will not be offered. In
most cases, the module is used to verify the harness
circuits in the Circuit/System Testing category and a
retest of the module should always be performed before
replacement.

Repair Instructions

Repair Instructions provides a link to "Diagnostic Repair
Verification - Vehicle Diagnostic Information". This link
describes how to verify the vehicle is repaired.
All links to Repair or Replacement procedures are
located here.
Repair Verification
Repair Verification describes how to verify the vehicle is
repaired when additional instructions are needed beyond
what is in Diagnostic Repair Verification.