check engine AUDI A4 2000 B5 / 1.G AHA Engine Throttle Valve Control Module Checking Workshop Manual

AUDI A4 2000 B5 / 1.G AHA Engine Throttle Valve Control Module Checking Workshop Manual A4 2000 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/1048/w960_1048-0.png AUDI A4 2000 B5 / 1.G AHA Engine Throttle Valve Control Module Checking Workshop Manual

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AUDI A4 2000 B5 / 1.G AHA Engine Throttle Valve Control Module Checking Workshop Manual 24-129
      
Function
 
      Idle speed stabilization is integrated in the 
throttle valve control module -J338-. In the 
housing opposite the throttle valve are Throttle 
Position (TP) sensor -G69-

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AUDI A4 2000 B5 / 1.G AHA Engine Throttle Valve Control Module Checking Workshop Manual 24-131
 
    
If wiring is OK:  -  Check wiring for short circuit between ECM/test box and 8-pin harness 
connector. 
 
Connector terminal 7 to ECM/test box socket 69
 Connector terminal 7 to ECM/test

Page 6 of 36

AUDI A4 2000 B5 / 1.G AHA Engine Throttle Valve Control Module Checking Workshop Manual 24-132
      
Closed Throttle Position (CTP) switch, 
checking
 
     
Note:  
     The Closed Throttle Position (CTP) switch -F60- 
is inside the throttle valve control module -J338-. 
     
Test con

Page 8 of 36

AUDI A4 2000 B5 / 1.G AHA Engine Throttle Valve Control Module Checking Workshop Manual 24-133
      
-  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 = d

Page 12 of 36

AUDI A4 2000 B5 / 1.G AHA Engine Throttle Valve Control Module Checking Workshop Manual 24-136
      
Throttle drive and angle sensor for 
throttle drive, checking
 
     
Note:  
     Throttle drive -G186- and angle sensor -1- for 
throttle drive -G187- are located in the throttle 
valv

Page 13 of 36

AUDI A4 2000 B5 / 1.G AHA Engine Throttle Valve Control Module Checking Workshop Manual 24-137
      
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 . 
Rap

Page 14 of 36

AUDI A4 2000 B5 / 1.G AHA Engine Throttle Valve Control Module Checking Workshop Manual 24-138
 
  
Display fields  
  
1   2   3   4  
Display group 55: Idle control  
Display   xxx RPM   x.xx g/s   x.xx g/s   xxxx  
Indicates   Engine speed RPM  
(in steps of 10 RPM)  Regulating value-

Page 16 of 36

AUDI A4 2000 B5 / 1.G AHA Engine Throttle Valve Control Module Checking Workshop Manual 24-139
 Evaluation of display group 55  Display group: 
55  
  
  
Display fields: 
2  3  
Possible malfunction cause  
Corrective action  
above 1.39 g/s  
 
Increased load because of switched-
on co

Page 17 of 36

AUDI A4 2000 B5 / 1.G AHA Engine Throttle Valve Control Module Checking Workshop Manual 24-140
 Explanation of 4-digit display  
Explanation when display field is = 0  
x  
x  
x  
x  
Display group 55  
         0   A/C compressor off (0 = A/C compressor off; 1 = A/C compressor on)

Page 21 of 36

AUDI A4 2000 B5 / 1.G AHA Engine Throttle Valve Control Module Checking Workshop Manual 24-143
      
Throttle Position (TP) sensor, checking
 
     
Note:  
     The Throttle Position (TP) sensor -G69- is 
located inside the throttle valve control module -
J338-. 
     
Test conditions
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