Page 29 - Foton Workshop Manual - Sauvana

INTRODUCTION - HOW TO TROUBLESHOOT THE VEHICLE 01-23

Detect Signal
System Symptom
system trouble detection streaming
description diagnosis
code(DTC) (sensor)

Audio system - - - - ● 01
Lighting - - - - ●
system

Combination - - - - ●
meter
Integrated - - - - ●
display

Tire pressure
monitoring - - - - ●
system
Transfer case - - - - ●

1. When detecting DTC, it is very important to judge whether the fault indicated by this
code has been occurred but returns to normal now. In addition, when confirming
fault symptom, you must check whether the fault indicated by DTC has direct
relationship with fault symptom. Therefore, DTC detection must be performed before
and after confirming fault symptom, to judge the current state of vehicle. Otherwise,
it will result in unnecessary fault diagnosis and elimination for normal system,
increase the difficulty of trouble shoot or perform some irrelevant maintenance
operations. Therefore, always obey the operating procedure to perform DTC
detection
2. The procedure about how to use DTC detection to perform troubleshooting is
as shown in the following picture. This flow indicates how to effectively use DTC
detection. Finally, this flow indicates how to use DTC and Fault Symptom Table to
perform troubleshooting
(a). DTC detection.
(b). Record the detected DTC and erase DTC.
WARNING:
If DTC is detected in inital DTC detection, it indicates that circuit harness or connector may
have fault, please check relevant harness or connector.Harness or connector. (Refer to
"Chapter 01 Introduction-How to Eliminate Vehicle Fault, Circuit Detection Procedure")
(c). Fault symptom confirmation.
Does fault symptom still exist?
Yes> Go to Step 4.
No> Go to Step 5.
(d). Fault symptom simulation detection. (Refer to "Chapter 01 Introduction-How to
Eliminate Vehicle Fault, How to Perform Troubleshooting")

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