Ignition/glow Plug System - 4.2l v8 5v - Bbd Audi S6 C5

General notes on ignition system

1. The engine control module is equipped with On Board Diagnostic (OBD).
2. A voltage of at least 11.5 V is necessary for satisfactory functioning of the electrical components.
3. In the case of some tests, a malfunction may be recognized and stored by the control module. At the end of all tests and repairs, the Diagnostic Trouble Code (DTC) memory should be checked and, if necessary, erased.
4. If the engine starts briefly and then stops after the DTC search, repair or tests on components, this may be because the immobilizer is blocking the engine control module. The DTC memory must then be checked and, if necessary, adaptation carried out on the control module.

Safety precautions

To prevent injuries to persons and/or damage to the fuel injection and ignition system, the following must be noted

1. Do not touch or disconnect ignition cables when the engine is running or at starter speed.
2. Always switch off the ignition before connecting or disconnecting the battery, otherwise the engine control module may be damaged.
3. Always switch off the ignition before connecting or disconnecting injection or ignition system wiring or tester cables.
4. To run engine at starting speed without actually starting it (for example, in order to test compression), unplug connector from the output stages of the ignition coils and also the connectors on the injectors. After completing the work, check the DTC memory and erase it.
5. Always switch off the ignition before washing the engine.

Technical data for ignition system

TECHNICAL DATA FOR IGNITION SYSTEM

Ignition coils, checking

Note. The ignition coil and the output stage are combined in a common component.

Test conditions

1. No DTCs relating to injector(s) stored

Identify an inoperative or misfiring cylinder as follows

1. Disconnect connectors from injectors in sequence with engine running, and observe how engine runs.
2. Compare spark plugs of all cylinders with each other and check for soot on electrodes.

If the faulty cylinder has been identified

1. Replace spark plug of faulty cylinder with one from another cylinder.

If the malfunction moves with the spark plug

1. Replace spark plug.

If the malfunction remains in the same cylinder

1. Replace ignition coil from faulty cylinder with one from another cylinder.
2. If malfunction now occurs at other cylinder, replace ignition coil.

If the malfunction remains on the cylinder, check Ground wiring of the ignition coil.

Checking the Ground connection for the ignition coil

1. Disconnect 4-pin connector from relevant ignition coil.
2. Check Ground connection from socket 4 on 4-pin connector to engine Ground for open circuit or short to positive.
3. Correct any open/short circuit as necessary.

If the Ground connection is OK: Check supply voltage for ignition coil. See CHECKING THE POWER SUPPLY TO THE IGNITION COIL .

Scheme 1

1. Connect hand-held multimeter to following socket on connector to measure voltage: IGNITION COIL CIRCUIT TEST: POWER SUPPLY 4-pin connector on wiring harness, socket Specified value 1 + Ground Battery voltage
2. Operate starter. Specified value: approx. battery voltage

If specified value is not attained

1. Check wiring from socket 1 via fuse to fuel pump relay for continuity, repair, if necessary. See appropriate System Wiring Diagram article.

If the specified value is achieved

1. Check performance output stage. See «OUTPUT STAGES FOR IGNITION COILS, CHECKING»(/audi/s6/c5-1999-2004/remont/ignition-system/#ignitionglow-plug-system-42l-v8-5v-bbd__output-stages-for-ignition-coils-checking) .

Output stages for ignition coils, checking

Note. The ignition coil and the output stage are combined in a common component.

Checking Ground supply of output stage

1. Disconnect 4-pin connector from relevant ignition coil.
2. Check Ground connection from socket 2 on 4-pin connector to body Ground for open circuit or short to positive.
3. Correct any open/short circuit as necessary. See appropriate System Wiring Diagram article.

If the Ground connection is OK

1. Check actuation of output stages. See «CHECKING ACTUATION OF POWER OUTPUT STAGES»(/audi/s6/c5-1999-2004/remont/ignition-system/#ignitionglow-plug-system-42l-v8-5v-bbd__checking-actuation-of-power-output-stages) .

Checking actuation of power output stages

1. Disconnect connectors from all eight injectors.

Note. It is important to ensure that no fuel is injected during the test, as this would damage the catalytic converter. Therefore, the connectors on the injectors must be disconnected.

1. Disconnect 4-pin connector from relevant ignition coil.
2. Connect VAG 1527 diode test lamp to following contacts on power output stage connector
3. Operate starter for a few seconds. POWER OUTPUT STAGE CIRCUIT TEST: ACTUATION 4-pin connector of relevant ignition coil at wiring harness, socket Specified value 3 + 2 Diode test lamp must flash (brief impulse)

If the specified values are not obtained

Scheme 2

1. Switch ignition off.
2. Connect test box VAG 1598/31 to wiring harness for engine control module; do not connect engine control module. See «WIRING AND COMPONENT CHECK WITH TEST BOX VAG 1598/31»(/audi/s6/c5-1999-2004/remont/fuel-system/#multiport-fuel-injection-mfi-42l-v8-5v-bbd__wiring-and-component-check-with-test) .
3. Test wiring from 4-pin connector at ignition coil or output stage ...
4. ... to engine control module to check for open circuit and short to positive or Ground. POWER OUTPUT STAGE CIRCUIT TEST: OPENS/SHORTS 4-pin connector of ignition coil or performance output stage Contact 3 Contact on test box VAG 1598/31 Cyl. 1 102 Cyl. 2 7 Cyl. 3 111 Cyl. 4 94 Cyl. 5 103 Cyl. 6 110 Cyl. 7 8 Cyl. 8 95 Wire resistance: max. 1.5 Ohm
5. Correct any open/short circuit as necessary. See appropriate System Wiring Diagram article.

If no wiring malfunction is detected

1. Replace common component ignition coil with output stage.
2. Read readiness code. Generate readiness code again if DTC memory was erased. See «READINESS CODE, GENERATING»(/audi/s6/c5-1999-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-42l-v8-5v-bbd) .

Test sequence

1. Connect vehicle diagnostic, testing and information system VAS 5051 or V.A.G 1551 Scan Tool and select engine electronics control module 1 with "Address word" 01. See «VEHICLE DIAGNOSTIC, TESTING AND INFORMATION SYSTEM VAS 5051, CONNECTING AND SELECTING ENGINE CONTROL MODULE»(/audi/s6/c5-1999-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-42l-v8-5v-bbd__vehicle-diagnostic-testing-and-information-system) or «V.A.G 1551 SCAN TOOL, CONNECTING AND SELECTING ENGINE CONTROL MODULE»(/audi/s6/c5-1999-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-42l-v8-5v-bbd) . For this purpose, engine must be running at idle speed.

Indicated on display

Scheme 3

1. Press keys 0 and 8 for function "Read measured value block" and confirm entry with Q key.

Indicated on display

Scheme 4

1. Press keys 0, 1 and 4 for "display group number 14" and confirm entry with Q key.

Indicated on display

Scheme 5

1. Check misfire detection. DISPLAY GROUP 014: MISFIRE DETECTION Display zones 1 2 3 4 Display group 014: Misfire detection Display xxx rpm xx.x% xxx - Display Engine speed Load Total misfires Misfire detection Range min.: 550 rpm min.: 0 activated max.: 7200 rpm max.: 100 blocked Specified value 600...820 rpm xx.x% 0...5 activated Note: - - If specified value is not attained: Evaluation, display zone 3 . See «Evaluation display group 014, display zone 3»(/audi/s6/c5-1999-2004/remont/ignition-system/#ignitionglow-plug-system-42l-v8-5v-bbd__evaluation-display-group-014-display-zone) .

If specified value is attained

1. Press -> key.

Display function selection)

Scheme 6

Evaluation display group 014, display zone 3

DISPLAY GROUP 014 & DISPLAY ZONE 3 SPECIFICATION

Engine speed (RPM) sensor -G28-, checking

Note. The engine speed sensor is a combined speed sensor and reference mark sensor.

Checking engine speed sensor

Location of connector. See COMPONENT LOCATIONS OVERVIEW .

1. Before performing the check, ensure that the sensor is correctly installed and firmly seated.
2. No debris or damage to speed sensor or wheel sensor.
3. The thickness of the plate between the sensor and the automatic transmission must be 4.5 mm.
4. Disconnect connector for engine speed sensor (identification: gray connector).

1. Connect hand-held multimeter VAG 1526 (resistance test range) to contacts 2 and 3 on connector for engine speed sensor using test lead from VAG 1594. Specified value: approx. 450...1000 ohm

Note. The resistance figure for the engine speed sensor is associated with a temperature of 20 °C. The resistance increases with increasing temperature.

If specification is not attained

1. Install a new engine speed sensor.

If the specified value is achieved

1. Connect VAG 1526 hand-held multimeter for resistance measurement between contacts 2 and 1 (Ground) as well as to contacts 3 and 1 (Ground). Specified value: infinity ohm in each case (no continuity).

If specification is not attained

1. Install a new engine speed sensor.

If the specified value is achieved

1. Check wiring between sensor connector and engine control module as follows

Scheme 7

1. Connect test box VAG 1598/31 to wiring harness for engine control module; do not connect engine control module. See «WIRING AND COMPONENT CHECK WITH TEST BOX VAG 1598/31»(/audi/s6/c5-1999-2004/remont/fuel-system/#multiport-fuel-injection-mfi-42l-v8-5v-bbd__wiring-and-component-check-with-test) .
2. Check wiring from 3-pin connector (sensor connector) ...
3. ... to engine control module for checking for open circuit and short to positive or Ground. ENGINE SPEED (RPM) SENSOR CIRCUIT TEST: OPENS/SHORTS 3-pin connector on wiring harness, socket Test box VAG 1598/31, socket 1 (screening) 108 2 (Ground wire) 90 3 (signal wire) 82 Wire resistance: max. 1.5 Ohm
4. Correct any open/short circuit as necessary. See appropriate System Wiring Diagram article.

If no wiring malfunctions are detected

1. Slowly turn engine and check sensor wheel for concentricity/tight fit.

If no malfunctions have been found in any of the above checks

1. Install a new engine control module. See «MOTRONIC ENGINE CONTROL MODULE (ECM) -J220-, REPLACING»(/audi/s6/c5-1999-2004/remont/fuel-system/#multiport-fuel-injection-mfi-42l-v8-5v-bbd__motronic-engine-control-module-ecm-j220) .
2. Read readiness code. Generate readiness code again if DTC memory was erased. See «READINESS CODE, GENERATING»(/audi/s6/c5-1999-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-42l-v8-5v-bbd) .

Knock control stop, checking

If a DTC entry relating to "knock control stop reached" is made, perform the following checks

IDENTIFYING KNOCK SENSOR CAUSES AND CORRECTIONS

Knock sensor (KS) 1 -G61- and Knock sensor (KS) 2 -G66-, checking

Note. It is not possible to perform an electrical test of the knock sensors -G61- and -G66- themselves (check DTC memory). See DIAGNOSTIC TROUBLE CODE (DTC) MEMORY, CHECKING AND ERASING . To ensure that the knock sensors function properly it is important to keep exactly to the specified tightening torque of 20 Nm. Use only gold plated contacts when repairing the contacts in the connectors for the knock sensors. Check connector between knock sensor and wiring harness for corrosion.

Checking knock sensors

Location of connectors. See COMPONENT LOCATIONS OVERVIEW .

1. Disconnect connector for relevant knock sensor in engine compartment.
2. Test for short between all three contacts in knock sensor connector (contacts 1+2, 1+3, 2+3). Specified value: There must be no connection between any of the wires (infinite resistance)

If there is a connection between the contacts

1. Install a new knock sensor.

If no short is found

1. Check knock sensor wiring.

Checking wiring from knock sensors to engine control module

1. Connect test box VAG 1598/31 to wiring harness for engine control module; do not connect engine control module. See «WIRING AND COMPONENT CHECK WITH TEST BOX VAG 1598/31»(/audi/s6/c5-1999-2004/remont/fuel-system/#multiport-fuel-injection-mfi-42l-v8-5v-bbd__wiring-and-component-check-with-test) .
2. Check wiring from relevant sensor connector ...
3. ... to engine control module to check for open circuit and short to positive or Ground.

Knock sensor 1 -G61- (Bank 1)

CIRCUIT TEST: KNOCK SENSOR 1 -G61- (BANK 1)

Knock sensor 2 -G66- (Bank 2)

CIRCUIT TEST: KNOCK SENSOR 2 -G66- (BANK 2)

Wire resistance: max. 1.5 Ohm

1. Correct any open/short circuit as necessary. See appropriate System Wiring Diagram article.

If no short circuit or open circuit is found

1. Replace engine control module. See «MOTRONIC ENGINE CONTROL MODULE (ECM) -J220-, REPLACING»(/audi/s6/c5-1999-2004/remont/fuel-system/#multiport-fuel-injection-mfi-42l-v8-5v-bbd__motronic-engine-control-module-ecm-j220) .

Camshaft Position (CMP) sensor -G40- and Camshaft Position (CMP) sensor 2 -G163-, checking

The CMP sensor indicates the ignition position for cylinder 1.

If the CMP sensor fails to function, the knock control is switched off and the ignition timing is retarded slightly because the signals can no longer be assigned to the cylinders.

Even without a signal from the CMP sensor, the engine will continue to run and can also be re started.

1. When a malfunction is detected, the engine control module produces one spark for each cylinder on every crankshaft revolution.
2. The fact that the control module is out of phase by one engine revolution does not have any noticeable effect on the injection system. If this happens, the fuel is injected "advanced" (when the intake valve is closed) instead of while the intake valve is open. This has only a minor influence on the quality of the air/fuel mixture.

Note. Camshaft Position (CMP) sensor 2 -G163- is located at rear of left cylinder head (bank 2). Camshaft Position (CMP) sensor -G40- is located at front of right cylinder head (bank 1). Location of CMP sensors. See COMPONENT LOCATIONS OVERVIEW .

Checking actuation of CMP sensor

For the following checks, use leads from adapter set VAG 1594.

1. Push back rubber sleeve on relevant CMP sensor connector.
2. Connect VAG 1527 diode test lamp to sockets 1 and 2 on CMP sensor connector from rear (connector remains attached to CMP sensor).

Note. Sockets are numbered accordingly on the back of the connector.

1. Operate starter for a few seconds. Diode test lamp must flash briefly on each second engine revolution.

Note. Diode test lamps with a low current consumption continue to glow faintly between impulses from the engine control module (rather than going out completely) and become much brighter when receiving an impulse.

If diode test lamp does not flash, check voltage supply.

Checking power supply for CMP sensor

1. Disconnect connector from relevant CMP sensor.
2. Switch ignition on.
3. Connect hand-held multimeter VAG 1526 (voltage measurement range) between engine Ground and socket 1 of relevant connector. Specified value: approx. 5 V

Checking signal wiring for CMP sensor

1. Switch ignition on.
2. Connect hand-held multimeter VAG 1526 to measure voltage between engine Ground and socket 2 of relevant connector. Specified value: approx. battery voltage

Checking Ground wire for CMP sensor

1. Connect hand-held multimeter VAG 1526 for resistance measurement between socket 3 on connector and engine Ground. Specified value: Continuity Wire resistance: max. 1.5 Ohm

If the specified values are all achieved and the diode test lamp does not flash (measured between contacts 1 and 2 with starter connector attached)

1. Replace relevant CMP sensor.

If specifications are not attained, check wiring connections.

Checking wiring between CMP sensor and engine control module

1. Connect test box VAG 1598/31 to wiring harness for engine control module; do not connect engine control module. See «WIRING AND COMPONENT CHECK WITH TEST BOX VAG 1598/31»(/audi/s6/c5-1999-2004/remont/fuel-system/#multiport-fuel-injection-mfi-42l-v8-5v-bbd__wiring-and-component-check-with-test) .
2. Check wiring from CMP sensor ...
3. ... to engine control module for checking for open circuit and short to positive or Ground.

Camshaft Position (CMP) sensor -G40- (Bank 1)

CIRCUIT TEST: CAMSHAFT POSITION (CMP) SENSOR -G40- (BANK 1)

Camshaft Position (CMP) sensor 2 -G163- (Bank 2)

CIRCUIT TEST: CAMSHAFT POSITION (CMP) SENSOR 2 -G163- (BANK 2)

Wire resistance: max. 1.5 Ohm

1. Correct any open/short circuit as necessary. See appropriate System Wiring Diagram article.

If a trial erasure of the DTC memory is followed by the replaced indication of a DTC relating to the CMP sensor although all previous tests were OK, the following malfunctions are possible

1. Rotor ring for CMP sensor misaligned, check phase location.
2. Read readiness code. Generate readiness code again if DTC memory was erased. See «READINESS CODE, GENERATING»(/audi/s6/c5-1999-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-42l-v8-5v-bbd) .

Checking phase location of CMP sensor

1. Connect vehicle diagnostic, testing and information system VAS 5051 or V.A.G 1551 Scan Tool and select engine electronics control module 1 with "Address word" 01. See «VEHICLE DIAGNOSTIC, TESTING AND INFORMATION SYSTEM VAS 5051, CONNECTING AND SELECTING ENGINE CONTROL MODULE»(/audi/s6/c5-1999-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-42l-v8-5v-bbd__vehicle-diagnostic-testing-and-information-system) or «V.A.G 1551 SCAN TOOL, CONNECTING AND SELECTING ENGINE CONTROL MODULE»(/audi/s6/c5-1999-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-42l-v8-5v-bbd) . For this purpose, engine must be running at idle speed.

Indicated on display

Scheme 8

1. Press keys 0 and 8 for function "Read measured value block" and confirm entry with Q key.

Indicated on display

Scheme 9

1. Press keys 0, 9 and 3 for "display group number 93" and confirm entry with Q key.

Indicated on display

Scheme 10

1. Check specified values for CMP sensor.

DISPLAY GROUP 93: PHASE LOCATIONS OF CMP SENSORS (BANK 1 AND BANK 2), ENGINE IDLING

Function of camshaft timing control

The timing control of the intake camshaft is dependent on the engine load and engine speed. The exhaust camshafts are not timed.

The electrical solenoid valves for camshaft timing control (Valves for camshaft adjustment) switch oil pressure to the camshaft adjuster (mechanical timing control device).

The mechanical camshaft adjusters then time the intake camshafts of both banks of cylinders toward "advanced", i.e. the intake valves open earlier.

Checking camshaft timing control function

1. Connect vehicle diagnostic, testing and information system VAS 5051 or V.A.G 1551 Scan Tool and select engine electronics control unit 1 with "Address word" 01. See «VEHICLE DIAGNOSTIC, TESTING AND INFORMATION SYSTEM VAS 5051, CONNECTING AND SELECTING ENGINE CONTROL MODULE»(/audi/s6/c5-1999-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-42l-v8-5v-bbd__vehicle-diagnostic-testing-and-information-system) or «V.A.G 1551 SCAN TOOL, CONNECTING AND SELECTING ENGINE CONTROL MODULE»(/audi/s6/c5-1999-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-42l-v8-5v-bbd) . For this purpose, engine must be running at idle speed.

Indicated on display

Scheme 11

1. Press keys 0 and 4 for function "Basic Setting" and confirm entry by pressing Q key.

Indicated on display

Scheme 12

1. Press keys 0, 9 and 4 for "display group number 94" and confirm entry with Q key.

Indicated on display

Scheme 13

1. Check specified value for camshaft timing control. DISPLAY GROUP 94: CAMSHAFT TIMING CONTROL Display zones 1 2 3 4 Display group 94: Camshaft timing control Display xxx rpm CS adj.OFF Test OFF Test OFF Display Engine speed (in steps of 40 rpm) Camshaft timing control off/on Test result Bank 1 Test result Bank 2 Range min.: 550 rpm max.: 7200 rpm CS adj.OFF CS adj.ON Test OFF Test ON Syst. OK Syst. not OK Test OFF Test ON Syst. OK Syst. not OK Specified value actual speed CS adj.OFF Test OFF Test OFF Note: Normal position Normal position
2. Increase speed approx. 2000 rpm until "CS adj.ON" appears in display zone 2. DISPLAY GROUP 94: CAMSHAFT TIMING CONTROL Display zones 1 2 3 4 Display group 94: Camshaft timing control Display xxx rpm CS adj.ON Test ON Test ON Display Engine speed (in steps of 40 rpm) Camshaft timing control off/on Test result Bank 1 Test result Bank 2 Range min.: 550 rpm max.: 7200 rpm CS adj.OFF CS adj.ON Test OFF Test ON Syst. OK Syst. not OK Test OFF Test ON Syst. OK Syst. not OK Specified value actual speed CS adj.ON Test ON Test ON Note
3. Keep speed until "Syst. OK" appears in display zones 3 and 4.

DISPLAY GROUP 94: CAMSHAFT TIMING CONTROL

If specified value in display zones 3 and 4 is not achieved

1. Check solenoid valves for camshaft timing control. See «VALVE 1 FOR CAMSHAFT ADJUSTMENT -N205- AND VALVE 2 FOR CAMSHAFT ADJUSTMENT -N208-, CHECKING»(/audi/s6/c5-1999-2004/remont/ignition-system/#ignitionglow-plug-system-42l-v8-5v-bbd__valve-1-for-camshaft-adjustment-n205) .

Valve 1 for camshaft adjustment -N205- and Valve 2 for camshaft adjustment -N208-, checking

1. Switch ignition on.
2. Perform Output Diagnostic Test Mode (DTM) and actuate valves for camshaft adjustment. See «OUTPUT DIAGNOSTIC TEST MODE (DTM)»(/audi/s6/c5-1999-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-42l-v8-5v-bbd__output-diagnostic-test-mode-dtm) .

Indicated on display

Scheme 14

Upon actuation of camshaft timing control, both valves should give a clearly audible click.

If specified value is not attained, perform the following tests

Checking valves for camshaft adjustment electrically

1. Disconnect connector from relevant valve for camshaft adjustment.
2. Measure resistance between contacts on valve using hand-held multimeter VAG 1526. Specified value: 10 ... 18 ohm.

If specification is not attained

1. Replace relevant valve for camshaft adjustment.

Testing voltage supply valves for camshaft adjustment

1. Disconnect connector from relevant valve.
2. Connect diode test lamp VAG 1527 between engine Ground and socket 1 (positive) on connector using cables from adapter set VAG 1594.
3. Operate starter for a few seconds. Engine may start. Diode test lamp should illuminate.

If the diode test lamp does not illuminate, perform the following tests

1. Check fuse for valves for camshaft adjustment. See appropriate System Wiring Diagrams article.

If the fuse is OK

1. Check wiring from socket 1 via fuse to fuel pump relay for continuity. See appropriate System Wiring Diagram article.

Checking actuation of valves for camshaft adjustment

1. Disconnect connector from relevant valve.
2. Connect diode test lamp VAG 1527 between sockets 1 (positive) and 2 on connector valve using cables from adapter set VAG 1594.
3. Perform Output Diagnostic Test Mode and actuate valves for camshaft adjustment. See «OUTPUT DIAGNOSTIC TEST MODE (DTM)»(/audi/s6/c5-1999-2004/remont/testing-diagnostics/#on-board-diagnostic-obd-42l-v8-5v-bbd__output-diagnostic-test-mode-dtm) .

Indicated on display

Scheme 15

Diode test lamp should flash on and off upon actuation of camshaft timing control.

If the diode test lamp is continuously lit

1. Check wiring connections from socket 2 of relevant connector for valve for camshaft adjustment for Ground short.

If the diode test lamp does not flash

1. Check wiring. See «CHECKING WIRING»(/audi/s6/c5-1999-2004/remont/ignition-system/#ignitionglow-plug-system-42l-v8-5v-bbd__checking-wiring) .

Checking wiring

1. Connect test box VAG 1598/31 to wiring harness for engine control unit; do not connect engine control module. See «WIRING AND COMPONENT CHECK WITH TEST BOX VAG 1598/31»(/audi/s6/c5-1999-2004/remont/fuel-system/#multiport-fuel-injection-mfi-42l-v8-5v-bbd__wiring-and-component-check-with-test) .
2. Check wiring connection of relevant connector for valve for camshaft adjustment for open circuits as well as short to positive.

Vehicles up to model year 2001

Valve 1 for camshaft adjustment -N205- and Valve 2 for camshaft adjustment -N208

VALVE 1 & 2 TEST BOX SOCKET SPECIFICATION (VEHICLES UP TO MODEL YEAR 2001)

Wire resistance: max. 1.5 Ohm

1. Correct any open/short circuit as necessary. See appropriate System Wiring Diagram article.

Vehicles from model year 2002

Valve 1 for camshaft adjustment -N205

VALVE 1 TEST BOX SOCKET SPECIFICATION (VEHICLES FROM MODEL YEAR 2002)

Wire resistance: max. 1.5 Ohm

1. Correct any open/short circuit as necessary. See appropriate System Wiring Diagram article.

Valve 2 for camshaft adjustment -N208

VALVE 2 TEST BOX SOCKET SPECIFICATION (VEHICLES FROM MODEL YEAR 2002)

Wire resistance: max. 1.5 Ohm

1. Correct any open/short circuit as necessary. See appropriate System Wiring Diagram article.

If no short circuit or open circuit is found, replace engine control module. See MOTRONIC ENGINE CONTROL MODULE (ECM) -J220-, REPLACING .

1. If none of tests already performed indicate a malfunction, then replace mechanical camshaft adjuster. See «VALVE GEAR, SERVICING»(ref-196260-S22049538912005100700000) .

See also:
• WIRING AND COMPONENT CHECK WITH TEST BOX VAG 1598/31
• READINESS CODE, GENERATING
• VEHICLE DIAGNOSTIC, TESTING AND INFORMATION SYSTEM VAS 5051, CONNECTING AND SELECTING ENGINE CONTROL MODULE
• INJECTORS, CHECKING
• COMPONENT LOCATIONS OVERVIEW
• MOTRONIC ENGINE CONTROL MODULE (ECM) -J220-, REPLACING
• DIAGNOSTIC TROUBLE CODE (DTC) MEMORY, CHECKING AND ERASING
• OUTPUT DIAGNOSTIC TEST MODE (DTM)
• CHECKING THE POWER SUPPLY TO THE IGNITION COIL
• OUTPUT STAGES FOR IGNITION COILS, CHECKING
• CHECKING ACTUATION OF POWER OUTPUT STAGES
• Evaluation display group 014, display zone 3
• IGNITION COILS, CHECKING
• KNOCK SENSOR (KS) 1 -G61- AND KNOCK SENSOR (KS) 2 -G66-, CHECKING
• VALVE 1 FOR CAMSHAFT ADJUSTMENT -N205- AND VALVE 2 FOR CAMSHAFT ADJUSTMENT -N208-, CHECKING
• CHECKING WIRING