AUDI A4 1996 B5 / 1.G APB Engine Ignition System Checking

Manufacturer: AUDI, Model Year: 1996, Model line: A4, Model: AUDI A4 1996 B5 / 1.G
Pages: 64, PDF Size: 0.37 MB
AUDI A4 1996 B5 / 1.G APB Engine Ignition System Checking A4 1996 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/1052/w960_1052-0.png AUDI A4 1996 B5 / 1.G APB Engine Ignition System Checking
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Page 31 of 64

AUDI A4 1996 B5 / 1.G APB Engine Ignition System Checking 28-28 If display field 3 does not display a realistic value: - Disconnect harness connector from coolant temperature sensor. Coolant temperature sensor with square connector:

Page 32 of 64

AUDI A4 1996 B5 / 1.G APB Engine Ignition System Checking 28-29 Coolant temperature sensor with oval connector: All: Scale A shows resistance values for temperature range 0 - 50 C and scale B the values for temperature range 50 - 100 C. - C

Page 33 of 64

AUDI A4 1996 B5 / 1.G APB Engine Ignition System Checking 28-30 If the value does match the specification: - Connect test box VAG1598/31 to wiring harness for engine control module. Do not connect to the engine control module itself. Page

Page 34 of 64

AUDI A4 1996 B5 / 1.G APB Engine Ignition System Checking 28-31 All: - Check wiring for short circuit to each other. - If necessary eliminate open circuit or short circuit. If no malfunction is identified in the wiring:

Page 35 of 64

AUDI A4 1996 B5 / 1.G APB Engine Ignition System Checking 28-32 Control module voltage supply, checking Test requirements: Fuse for Engine Control Module (ECM) OK Electrical Wiring Diagrams, Troubleshooting & Component

Page 36 of 64

AUDI A4 1996 B5 / 1.G APB Engine Ignition System Checking The Ground (GND) connection for the engine control module is via terminals 1 and 2. Pa ge 36 of 64 I gnition s ystem, checkin g 11/22/2002 htt p://127.0.0.1:8080/audi/servlet/Dis play?action=Goto&t

Page 37 of 64

AUDI A4 1996 B5 / 1.G APB Engine Ignition System Checking 28-33 - Connect hand-held multimeter VAG1526 (voltage measurement range) to the following contacts on the test box: Contact Specification 3 + 2 approx. battery voltage 3 + 1

Page 38 of 64

AUDI A4 1996 B5 / 1.G APB Engine Ignition System Checking 28-34 Knock sensor control limit, checking If the malfunction message "Knock control regulation reached" is recorded in the DTC memory the following tests must be carried out. See al

Page 39 of 64

AUDI A4 1996 B5 / 1.G APB Engine Ignition System Checking 28-35 Measuring value blocks for ignition timing angle retard Display Group 20 -Ignition- Knock control Driving mode Read measuring value block 20 Indicated on display xx.x KW x

Page 40 of 64

AUDI A4 1996 B5 / 1.G APB Engine Ignition System Checking The displayed digit values in display fields 1 to 4 reflects the actual "ignition timing retard" via knock control from the individual cylinders. The ignition timing retard occurs via KW (crankshaft
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