lock AUDI A4 1996 B5 / 1.G AHA Engine Auxiliary Signals Checking Workshop Manual
[x] Cancel search | Manufacturer: AUDI, Model Year: 1996, Model line: A4, Model: AUDI A4 1996 B5 / 1.GPages: 22, PDF Size: 0.09 MB
Page 3 of 22

24-165
      
Checking  
     
-  Connect VAG1551 or VAG1552 scan tool and 
press buttons -0- and -1- to insert "Engine 
Electronics" address word 01 (with engine 
running at idle)   page 01
-8 . 
Rapid data transfer 
HELP
Select function XX
    
Indicated on display  
-  Press buttons -0- and -8- to select "Read Measuring Value Block" 
function 08, and press -Q- button to confirm input. 
Read Measurin
g Value Block 
HELP
Input displa
y group number XXX
    
Indicated on display  
-  Press buttons -0-, -5- and -0- to input display group number 50 (050), 
and press -Q- button to confirm input. 
Read Measuring Value Block 50 1 2 3 4 
    
Indicated on display (1-4 = display fields)  
-  Switch on A/C (lowest temperature and highest fan position).
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Page 10 of 22

24-169
      
Test procedure  
     
-  Connect VAG1551 or VAG1552 scan tool and 
press buttons -0- and -1- to insert "Engine 
Electronics" address word 01 (with engine 
running at idle)   page 01
-8 . 
Rapid data transfer 
HELP
Select function XX
    
Indicated on display  
-  Press buttons -0- and -8- to select "Read Measuring Value Block" 
function 08, and press -Q- button to confirm input. 
Read Measurin
g Value Block 
HELP
Input displa
y group number XXX
    
Indicated on display  
-  Press buttons -0-, -0- and -5- to input display group number 5 (005), 
and press -Q- button to confirm input. 
Read Measuring Value Block 5 1 2 3 4 
    
Indicated on display (1-4 = display fields)  
-  Road test and compare indicated vehicle speed with value in display 
field 3 (2nd technician required,   Safety precautions   page 24
-9 ). 
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Page 13 of 22

24-171
      
Continuation  
      If no speed was indicated:  
    
Notes: 
If the LED does not blink:  
If the wiring is OK and the LED does not blink:  
 Repair Manual, Electrical Equipment, Repair Group 90
    -  Connect VAG1598/22 test box to ECM harness connector   page 01
-
67
 . 
-  Connect VAG1527B LED voltage tester between ECM/test box sockets 
3 (B+) and 20 (signal). 
-  Lift vehicle at left-front until wheel is free.
-  Switch ignition on and rotate left-front wheel by hand.
   LED must blink (very brief blink)
The right-front wheel must not rotate; block it if necessary.For LEDs with little voltage consumption, the LED lights up at half 
strength when the ignition is switched on. 
-  Check wiring from ECM connector, terminal 20 to instrument cluster for 
open circuit or short circuit   Electrical Wiring Diagrams, 
Troubleshooting & Component Locations binder. 
- 
Check readiness code   page 01
-70
 . If Diagnostic Trouble Code 
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pair&id=AUDI.B5.FU03.24.4