Home ReviewsRefund
Home/Audi/A6/Audi A6 C5 (1997-2001)/Repair manual/Ignition/glow Plug System - 2.8l v6 Atq/Specified values
Contents Wiring diagrams Section: Ignition/glow Plug System - 2.8l v6 Atq All sections

Specified values Audi A6 C5

Ignition/glow Plug System - 2.8l v6 Atq 5 illustrations ~385 words

Specified values

Temperature ° CResistance k ohm
20Approx. 13.8
0Approx. 5.5
20Approx. 2.4
40Approx. 1.1
60Approx. 0.6

INTAKE AIR TEMPERATURE SENSOR: TEMPERATURE VERSUS RESISTANCE SPECIFICATIONS

Note. If air temperature is in a range from 0 ° C to 20 ° C, the resistance value must be between 5 k and 2.4 k ohm

If specified value is not obtained

  1. Replace Intake Air Temperature (IAT) sensor.

Scheme 46

Scheme 46: Special tools and equipment
Scheme 46: Special tools and equipment
  1. VAG1526A
  2. VAG1594A
  3. VAG1598/31 (Scheme 46): Identifying Special Tools And Equipment

Component locations, see COMPONENT LOCATIONS, OVERVIEW .

Note. The engine speed (RPM) sensor detects RPM and reference marks. The engine cannot be started without a signal from the engine speed (RPM) sensor -G28-. If the engine speed (RPM) sensor -G28- signal fails while the engine is running, the engine will stop immediately.

Scheme 47

Scheme 47: Test sequence
Scheme 47: Test sequence
  1. Before performing test, check sensor for proper installation and proper fit.
  2. Disconnect harness connector for engine speed (RPM) sensor (identification: gray harness connector). (Scheme 47): Identifying Engine Speed (RPM) Sensor 3-Pin Connector Terminals
  3. Connect multimeter between terminal 2 and 3 for resistance measurement. Specification: 730 to 1000 ohm

Note. Resistance value of the engine speed (RPM) sensor is based on a temperature of 20 ° C. Resistance increases as temperature increases.

If specified value is not obtained

  1. Replace engine speed (RPM) sensor.

If specified value is obtained

Identifying Engine Speed (RPM) Sensor 3-Pin Connector Terminals. Scheme 48

Scheme 48: Identifying Engine Speed (RPM) Sensor 3-Pin Connector Terminals
Scheme 48: Identifying Engine Speed (RPM) Sensor 3-Pin Connector Terminals
  1. Connect multimeter to terminals 2 and 1 (shielding) and to terminals 3 and 1 (shielding) for resistance measurement. Specification: INFINITY ohm each (no continuity)

If specified value is not obtained

  1. Replace engine speed (RPM) sensor.

If specified value is obtained

Scheme 49

Scheme 49
Scheme 49
  1. Connect VAG1598/31 test box at wiring harness to ECM; do not connect ECM. See «WIRE AND COMPONENT TEST USING VAG1598/31 TEST BOX»(/audi/a6/c5-1997-2001/remont/fuel-system/#multiport-fuel-injection-mfi-28l-v6-atq__wire-and-component-test-using-vag159831). (Scheme 49): Identifying Engine Speed (RPM) Sensor 3-Pin Harness Connector Terminals
  2. Check following wire connections for open circuit and short circuit to Ground (GND) and B+: ENGINE SPEED (RPM) SENSOR CIRCUIT TEST Harness connector Terminal VAG1598/31 test box Socket 1 (shielding) 108 2 (Ground -GND-) 90 3 (signal) 82
  3. Repair open circuit or short circuit if necessary.

If no malfunctions are found in wires

  1. Replace Engine Control Module (ECM). See «ENGINE CONTROL MODULE (ECM) (WITHOUT METAL ANTI-THEFT HOUSING), REPLACING»(/audi/a6/c5-1997-2001/remont/fuel-system/#multiport-fuel-injection-mfi-28l-v6-atq__engine-control-module-ecm-without-metal) .

Scheme 50

Scheme 50: Special tools and equipment
Scheme 50: Special tools and equipment
  1. VAG1526A
  2. VAG1594A
  3. VAG1598/31
  4. VAS5051 with VAG5051/1 or
  5. VAG1551 with VAG1551/3B (Scheme 50): Identifying Special Tools And Equipment

Component locations, see COMPONENT LOCATIONS, OVERVIEW .