AUDI A4 1999 B5 / 1.G Instrument Cluster OBD From Model Year 1999 User Guide

AUDI A4 1999 B5 / 1.G Instrument Cluster OBD From Model Year 1999 User Guide A4 1999 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/916/w960_916-0.png AUDI A4 1999 B5 / 1.G Instrument Cluster OBD From Model Year 1999 User Guide
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Page 11 of 74

AUDI A4 1999 B5 / 1.G Instrument Cluster OBD From Model Year 1999 User Guide 01-9
      
On Board Diagnostic (OBD) functions  
      The following functions are possible:  
      02 - Check DTC Memory   Page 01
-10
   
      03 - Output Diagnostic Test Mode   Page 01
-15

Page 12 of 74

AUDI A4 1999 B5 / 1.G Instrument Cluster OBD From Model Year 1999 User Guide 01-10
      
Check DTC Memory (scan tool function 
02)
 
     
Note:  
     The displayed DTC information is updated only 
when initiating OBD or with "Erase DTC Memory" 
function 05. 
     
-  Switch

Page 13 of 74

AUDI A4 1999 B5 / 1.G Instrument Cluster OBD From Model Year 1999 User Guide 01-11
 
No DTC recognized! 
    
If "No DTC recognized!" is displayed, the program will return to "Select 
function XX" prompt after the   button is pressed.  
Rapid data transfer 
HELP
Select functio

Page 14 of 74

AUDI A4 1999 B5 / 1.G Instrument Cluster OBD From Model Year 1999 User Guide 01-12
 Diagnostic Trouble Code (DTC) table for instrument cluster
 
Notes:  
 
The following table lists all possible Diagnostic Trouble Codes (DTCs) which the instrument cluster can recognize and 
wh

Page 15 of 74

AUDI A4 1999 B5 / 1.G Instrument Cluster OBD From Model Year 1999 User Guide 01-13
 
DTC  
Possible cause  
Corrective action  
VAG1551 scan tool 
display       
00667        
Ambient-Temperature 
Signal  
 
Open/Short circuit 
to B+ 
 Short circuit to 
Ground Vehicles without

Page 16 of 74

AUDI A4 1999 B5 / 1.G Instrument Cluster OBD From Model Year 1999 User Guide 00779        
Outside Air 
Temperature Sensor-
G17  
 
Open/Short circuit 
to B+ 
 Short circuit to 
Ground  
Open circuit or short circuit
 Outside air temperature sensor --G17- 
faulty - Trace malfu

Page 17 of 74

AUDI A4 1999 B5 / 1.G Instrument Cluster OBD From Model Year 1999 User Guide 01-14
 
01039        
ECT Sensor-G2  
 
Open/Short 
circuit to B+ 
 Short circuit to 
Ground (GND)  
Open circuit or short circuit between Engine Coolant 
Temperature Sensor (ECT) -G2- and instrument

Page 18 of 74

AUDI A4 1999 B5 / 1.G Instrument Cluster OBD From Model Year 1999 User Guide 01-15
      
Output Diagnostic Test Mode (scan tool 
function 03)
 
     
Notes:  
     
Output Diagnostic Test Mode may only be 
carried out on a stationary vehicle with the 
engine off. 
     Trace

Page 19 of 74

AUDI A4 1999 B5 / 1.G Instrument Cluster OBD From Model Year 1999 User Guide      
Segment check of the multi-function display 
and/or the LCD odometer. 
     Activation of the instrument cluster lights and 
dimmer. 
     Coolant excess temperature test
Pa
ge 19 of 74 Instrume

Page 20 of 74

AUDI A4 1999 B5 / 1.G Instrument Cluster OBD From Model Year 1999 User Guide 01-16
      
Notes:  
     
The instrument cluster lighting test can only be 
carried out with the lights on. 
     The coolant excess temperature test activates 
the A/C compressor safety shut-off.
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