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3.0l - Ignition/glow Plug System - Engine Code(s): Cjwb, Cjwc & Cjwe Audi Q7 4L рестайлинг

Ignition System 15 illustrations ~1125 words

TEST AND MEASURING INSTRUMENTS DURING TEST DRIVE

If testing equipment must be used during a road test, observe the following

WARNINGDistraction and testing equipment that is not secured properly can cause accidents. The passenger airbag could pose a risk if it deploys in a collision. Operating testing equipment while driving causes it to shift position. There is an increased risk of injury due to unsecured testing equipment. Always secure testers on the rear seat with a strap and have a second person on the rear seat operate them.

SAFETY PRECAUTIONS

To reduce the risk of personal injury and/or damage to the fuel injection and ignition system, always observe the following

  1. Individuals with a pacemaker must not stay in the danger area of high voltage systems, for example ignition system, xenon light.
  2. Do not touch or remove ignition wires when engine is running or turning at starter speed.
  3. Turn off the ignition before disconnecting and connecting the wiring for the injection and ignition system. This includes tester cables as well.
  4. Only clean engine with ignition switched off.
  5. Disconnect the ignition coil connectors if the engine is supposed to be driven by the cranking speed so that the engine cannot start (for example, when performing a compression test). Refer to «IGNITION COILS WITH POWER OUTPUT STAGES»(/audi/q7/4l-2009-2015/remont/ignition-system/#30l-ignitionglow-plug-system-engine-codes-cjwb-cjwc-cjwe__ignition-coils-with-power-output-stages) .
  6. Also, remove the fuse for the Fuel Pump (FP) control module -J538-, refer to appropriate SYSTEM WIRING DIAGRAM.
  7. If the connectors were disconnected and the engine was started, then malfunctions have been stored in the Engine Control Module (ECM) Diagnostic Trouble Code (DTC) memory.
CAUTIONRisk of destroying electronic components when disconnecting the battery. Observe measures for disconnecting battery. Only disconnect the battery with ignition turned off.

Disconnect the battery. Refer to BATTERY, DISCONNECTING AND CONNECTING .

IGNITION SYSTEM

  1. The Engine Control Module (ECM) is equipped with On Board Diagnostics (OBD).
  2. For the electric components to work properly, a voltage of at least 11.5 Volts is required.
  3. It is possible that entries may be stored in the ECM Diagnostic Trouble Code (DTC) memory in some tests. After completing all testing and repairs, check the DTC memory.
  4. If the engine only starts briefly and then turns off again after troubleshooting, repair or checking of the components, it may be that the immobilizer is blocking the ECM. The ECM DTC memory must then be checked and if necessary, the control module must be adapted.

Scheme 1

Scheme 1: IGNITION OVERVIEW
Scheme 1: IGNITION OVERVIEW
  1. Bolt 9 Nm
  2. Camshaft Position (CMP) Sensor -G40- Removing and installing, refer to «Camshaft Position (CMP) Sensor -G40- / Camshaft Position (CMP) Sensor 2 -G163»(/audi/q7/4l-2009-2015/remont/ignition-system/#30l-ignitionglow-plug-system-engine-codes-cjwb-cjwc-cjwe__camshaft-position-sensor-g40)
  3. O-ring Replace
  4. Knock Sensor (KS) Cylinder bank 1 (right) Knock Sensor (KS) 1 -G61- Cylinder bank 2 (left) Knock Sensor (KS) 2 -G66- Removing and installing, refer to «Knock Sensors (KS) 1 -G61- / Knock Sensors (KS) 2 -G66»(/audi/q7/4l-2009-2015/remont/ignition-system/#30l-ignitionglow-plug-system-engine-codes-cjwb-cjwc-cjwe__knock-sensors-g61-g66)
  5. Bolt 25 Nm
  6. Spark Plug Change interval, refer to the Maintenance Intervals Rep. Gr. 03 Tightening specification, refer to the Maintenance Procedures Rep. Gr. 03
  7. Ignition Coil Removing and installing, refer to «IGNITION COILS WITH POWER OUTPUT STAGES»(/audi/q7/4l-2009-2015/remont/ignition-system/#30l-ignitionglow-plug-system-engine-codes-cjwb-cjwc-cjwe__ignition-coils-with-power-output-stages)
  8. Bolt 5 Nm
  9. Wiring Harness
  10. Bolt 9 Nm
  11. Engine Speed (RPM) Sensor -G28- Removing and installing, refer to «Engine Speed (RPM) Sensor -G28»(/audi/q7/4l-2009-2015/remont/ignition-system/#30l-ignitionglow-plug-system-engine-codes-cjwb-cjwc-cjwe__engine-speed-rpm-sensor-g28)
  12. O-ring Replace
  13. Camshaft Position (CMP) Sensor 2 -G163- Removing and installing, refer to «Camshaft Position (CMP) Sensor -G40- / Camshaft Position (CMP) Sensor 2 -G163»(/audi/q7/4l-2009-2015/remont/ignition-system/#30l-ignitionglow-plug-system-engine-codes-cjwb-cjwc-cjwe__camshaft-position-sensor-g40)
  14. Bolt 9 Nm

TEST DATA

3.0L TFSI Engine
Engine idle speedCannot be adjusted, it is regulated by idle stabilization
Ignition timingNot adjustable, regulated by the control module
Ignition/Glow Plug SystemSingle coil ignition system with 6 ignition coils (output stages integrated) that are connected directly to the spark plugs via the ignition cables.
Spark plugsNames=>
Tightening SpecificationsRefer to the Maintenance Procedures Rep. Gr. 03
Ignition sequence1-4-3-6-2-5

FASTENER TIGHTENING SPECIFICATIONS

ComponentFastener SizeNm
Camshaft Position Sensor9
Engine Speed Sensor9
Knock Sensor25
Wiring Harness5

ENGINE SPEED (RPM) SENSOR -G28

Removing

Scheme 2

Scheme 2: ENGINE SPEED (RPM) SENSOR -G28
Scheme 2: ENGINE SPEED (RPM) SENSOR -G28

On a vehicle with air suspension, activate vehicle lift mode. Refer to Diagnosis and Testing .

Remove the noise insulation -1- and -2-. Refer to Removal and Installation .

CAUTIONRisk of distorting airbag spiral spring. Separate universal joint from steering gear only when front wheels are in the straight ahead position. Secure steering wheel with adhesive tape to prevent position of steering wheel and steering gear from changing.

Remove the 2 bolts and then remove the steering gear heat shield -A-.

Scheme 3

Scheme 3
Scheme 3

Remove the universal joint bolt -B-. Refer to Removal and Installation .

Remove universal joint from steering gear.

Remove the bolts -2- to be able to lower the rear subframe.

Scheme 4

Scheme 4
Scheme 4
WARNINGThe subframe could cause an accident if it is not secured. Do not loosen the subframe bolts -1, 3 and 4-.

Disconnect the connector -3-.

Scheme 5

Scheme 5
Scheme 5

Remove the cover -2-.

Remove the bolt -1- and remove the RPM sensor.

Installing

Install in reverse order of removal.

  1. Tightening specification, refer to «IGNITION OVERVIEW»(/audi/q7/4l-2009-2015/remont/ignition-system/#30l-ignitionglow-plug-system-engine-codes-cjwb-cjwc-cjwe) .

Install subframe. Refer to Removal and Installation .

Install universal joint on steering gear. Refer to Removal and Installation .

Install the noise insulation. Refer to Removal and Installation .

On a vehicle with air suspension, deactivate vehicle lift mode. Refer to Diagnosis and Testing .

IGNITION COILS WITH POWER OUTPUT STAGES

Special tools and workshop equipment required

  1. Ignition Coil Puller T40039

Removing

Scheme 6

Scheme 6
Scheme 6

The following steps are only required for the ignition coils from cylinders 2 and 3.

Remove the vacuum hose -1- from the air guide hose connection.

Loosen the clamps -arrows- and remove the air guide pipe.

All

Remove the left and right bolts -arrows- and disconnect the connectors from the ignition coils.

Scheme 7

Scheme 7
Scheme 7

Lay the electrical wiring harness down slightly.

Note. Ignore -1 and 2-.

Remove the ignition coils using the T40039.

Scheme 8

Scheme 8
Scheme 8

Installing

  1. For the correct tightening specifications, refer to «IGNITION OVERVIEW»(/audi/q7/4l-2009-2015/remont/ignition-system/#30l-ignitionglow-plug-system-engine-codes-cjwb-cjwc-cjwe) .

Install in reverse order, paying attention to the following

Note. The hose connections as well as the air guide pipes and hoses must be free of oil and grease before installing. Secure all hose connections with hose clamps of the same type as those equipped by the factory. To mount the air guide hoses on their connectors securely, spray the bolts on the used clamps with rust remover before installing.

KNOCK SENSORS -G61- / -G66

Removing

Scheme 9

Scheme 9: KNOCK SENSORS -G61- / -G66
Scheme 9: KNOCK SENSORS -G61- / -G66

Remove the supercharger. Refer to Removal and Installation .

Remove the affected intake manifold lower section. Refer to LOWER INTAKE MANIFOLD WITH FUEL RAIL .

Remove the electrical connector -3- from the bracket.

Scheme 10

Scheme 10
Scheme 10

Disconnect the connector -2- on cylinder bank 1.

Note. Ignore -1-.

Disconnect the connector -2- on cylinder bank 2.

Scheme 11

Scheme 11
Scheme 11

Note. Ignore -1 and 3-.

Remove the bolt -1- from KS 1 or the bolt -2- from KS 2 and then remove the knock sensor.

Scheme 12

Scheme 12
Scheme 12

Installing

Install in reverse order, paying attention to the following

  1. For the correct tightening specifications, refer to «IGNITION OVERVIEW»(/audi/q7/4l-2009-2015/remont/ignition-system/#30l-ignitionglow-plug-system-engine-codes-cjwb-cjwc-cjwe) .

Install the lower intake manifold section. Refer to LOWER INTAKE MANIFOLD WITH FUEL RAIL .

Install the supercharger. Refer to Removal and Installation .

CAMSHAFT POSITION SENSOR -G40- / - G163

Removing

Scheme 13

Scheme 13: CAMSHAFT POSITION SENSOR -G40- / - G163
Scheme 13: CAMSHAFT POSITION SENSOR -G40- / - G163

Remove the front engine cover. Refer to ENGINE COVERS .

Disconnect the connector -1-.

Remove the bolt -arrow- and remove the CMP sensor (cylinder bank 1).

Disconnect the connector -1-.

Scheme 14

Scheme 14
Scheme 14

Remove the bolt -arrow- and remove CMP sensor 2 (cylinder bank 2).

Installing

Install in reverse order, paying attention to the following

  1. For the correct tightening specifications, refer to «IGNITION OVERVIEW»(/audi/q7/4l-2009-2015/remont/ignition-system/#30l-ignitionglow-plug-system-engine-codes-cjwb-cjwc-cjwe) .

Note. Replace the O-rings.

SPECIAL TOOLS

Special tools and workshop equipment required

Scheme 15

Scheme 15: SPECIAL TOOLS
Scheme 15: SPECIAL TOOLS
  1. Ignition Coil Puller T40039

Edition 7 22 2011

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