Toyota AVENSIS 1999 Supplement Manual page 31

IN–26
5. PROBLEM SYMPTOMS TABLE
The suspected circuits or parts for each problem symptom are shown in the table below. Use this table to
troubleshoot the problem when a "Normal" code is displayed in the diagnostic trouble code check but the
problem is still occurring. Numbers in the table indicate the inspection order in which the circuits or parts
should be checked.
HINT:
When the problem is not detected by the diagnostic system even though the problem symptom is present,
it is considered that the problem is occurring outside the detection range of the diagnostic system, or that
the problem is occurring in a system other than the diagnostic system.
D
Circuit Inspection, Inspection Order
Indicates the circuit which needs to be checked for each problem
symptom. Check in the order indicated by the numbers.
D Problem Symptom
PROBLEM SYMPTOMS TABLE
Proceed with troubleshooting of each circuit in the table below.
Symptom
D With the ignition switch in the ACC or ON position, the SRS warning
light sometimes lights up after approx. 6 seconds have elapsed.
D
SRS warning light is always lit up even when ignition switch is in
the LOCK position
D With the ignition switch in the ACC or ON position, the SRS warning
light does not light up.
D DTC is not displayed.
D
SRS warning light is always lit up at the time of DTC check
procedure.
D
DTC is displayed without Tc and E1 terminal connection.
– HOW TO TROUBLESHOOT ECU CONTROLLED
INTRODUCTION
SYSTEMS
D Page
Indicates the page where the flow chart for each circuit
is located.
D
Circuit or Part Name
Indicates the circuit or part which needs to be checked.
D SRS warning light circuit
(Always lights up when ignition switch is in
LOCK position.)
D SRS warning light circuit
(Dose not light up when ignition switch is turned to
ACC or ON.)
D Tc terminal circuit
Suspect Area
See page
DI–288
DI–290
DI–294