AUDI A4 1999 B5 / 1.G AHA Engine Auxiliary Signals Checking Workshop Manual

Manufacturer: AUDI, Model Year: 1999, Model line: A4, Model: AUDI A4 1999 B5 / 1.G
Pages: 22, PDF Size: 0.09 MB
AUDI A4 1999 B5 / 1.G AHA Engine Auxiliary Signals Checking Workshop Manual A4 1999 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/1041/w960_1041-0.png AUDI A4 1999 B5 / 1.G AHA Engine Auxiliary Signals Checking Workshop Manual
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Page 1 of 22

AUDI A4 1999 B5 / 1.G AHA Engine Auxiliary Signals Checking Workshop Manual 24-164 Auxiliary signals, checking Signal from A/C compressor, checking Required special tools and test equipment VAG1551 or VAG1552 Scan Tool (ST) with VAG1551/3 adapt

Page 2 of 22

AUDI A4 1999 B5 / 1.G AHA Engine Auxiliary Signals Checking Workshop Manual Code (DTC) memory page 01 -16 . Pa ge 2 of 22 Auxiliar y si gnals, checkin g 11/23/2002 htt p://127.0.0.1:8080/audi/servlet/Dis play?action=Goto&t yp e=re pair&id=AUDI.B5.FU03.24.4

Page 3 of 22

AUDI A4 1999 B5 / 1.G AHA Engine Auxiliary Signals Checking Workshop Manual 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 . Rap

Page 4 of 22

AUDI A4 1999 B5 / 1.G AHA Engine Auxiliary Signals Checking Workshop Manual 24-166 - Compare display with specified values for A/C (in display field 4). Display fields 1 2 3 4 Display group 50: Signals to Engine Control Module (ECM) Display xxxx

Page 5 of 22

AUDI A4 1999 B5 / 1.G AHA Engine Auxiliary Signals Checking Workshop Manual Notes: The A/C compressor is switched off during acceleration when the car is stationary or at slow speed. At wide open throttle the A/C compressor is switched off by the Transm

Page 6 of 22

AUDI A4 1999 B5 / 1.G AHA Engine Auxiliary Signals Checking Workshop Manual 24-167 Continuation If the displayed values are NOT OK: - Connect VAG1598/22 test box to ECM harness connector page 01 -67 . - Check wiring for open circuit, short c

Page 7 of 22

AUDI A4 1999 B5 / 1.G AHA Engine Auxiliary Signals Checking Workshop Manual - Check readiness code page 01 -70 . If Diagnostic Trouble Code (DTC) memory has been erased, or ECM was disconnected, generate new readiness code page 01 -73 . Pa ge 7 of 22 Auxiliar

Page 8 of 22

AUDI A4 1999 B5 / 1.G AHA Engine Auxiliary Signals Checking Workshop Manual 24-168 Vehicle speed signal, checking Required special tools and test equipment VAG1551 or VAG1552 Scan Tool (ST) with VAG1551/3 adapter cable Multimeter US1119 (Fluke 83

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AUDI A4 1999 B5 / 1.G AHA Engine Auxiliary Signals Checking Workshop Manual Read safety precautions for test driving vehicles while using test equipment page 24 -9 . The speed signal is generated by the vehicle speed sensor (at the transmission), and process

Page 10 of 22

AUDI A4 1999 B5 / 1.G AHA Engine Auxiliary Signals Checking Workshop Manual 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
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