Home ReviewsRefund
Home/Audi/A8/Audi A8 D3 facelift (2005-2007)/Repair manual/6.0L 12-CYL. 4V Generic Scan Tool, Engine Code(s): Bsb/Engine Coolant Temperature Sensor on Radiator, Checking
Contents Wiring diagrams Section: 6.0L 12-CYL. 4V Generic Scan Tool, Engine Code(s): Bsb All sections

Engine Coolant Temperature Sensor on Radiator, Checking Audi A8 D3 facelift

6.0L 12-CYL. 4V Generic Scan Tool, Engine Code(s): Bsb ~360 words

Engine Coolant Temperature Sensor on Radiator, Checking

Special tools, testers and auxiliary items required

  1. Hand multimeter V.A.G 1526 or Multimeter V.A.G 1715
  2. Test adapter kit V.A.G 1594
  3. Wiring diagram

Test conditions

  1. The Ground (GND) connections between engine and body must be OK.
  2. Ignition switched off.
  3. Fuses in right instrument panel fuse holder must be OK: --> Electrical Wiring Diagrams, Troubleshooting and Component Locations

Right instrument panel fuse holder

Test Sequence

  1. Remove 2-pin connector from Engine Coolant Temperature (ECT) Sensor (on Radiator) G83.

Check resistance

  1. Measure resistance at Engine Coolant Temperature (ECT) Sensor (on Radiator) G83.

Range A displays resistance values for the temperature range of 0 to 50 C, range B displays resistance values for the temperature range of 50 to 100 C.

Example

  1. 30 C is in range A and corresponds to a resistance of 1.5 to 2.0 kohms
  2. 80 C is in range B and corresponds to a resistance of 275 to 375ohms

If specification is not obtained

  1. Replace Engine Coolant Temperature (ECT) Sensor (on Radiator) G83.
CAUTIONCooling system is under pressure. Danger of scalding when opening!
  1. Erase DTC memory of Engine Control Module (ECM) --> «Diagnostic Mode 04 - Erase DTC Memory»(ref-289213-S09339984582008062700000) , Diagnostic mode 4: Reset/erase diagnostic data.
  2. Generate readiness code --> «Readiness Code, Generating»(ref-289213-S27478988702008062700000) .

If specification is obtained

  1. Check wires to control module according to wiring diagram --> «Check wires to control module»(ref-289213-S39288011812008062700000) .
  1. Connect test box to Engine Control Module (ECM) J623 wiring harness on connecting test box for wiring test.
  1. Check wires between test box and 2-pin connector to Engine Control Module (ECM) for open circuit according to wiring diagram. Terminal 1+Socket 17, Terminal 2+Socket 50, wire resistance: max. 1.5 ohms
  2. Check wires for short circuit to each other, to vehicle Ground (GND) and to B+. Specification: infinity ohms
  3. Erase DTC memory of Engine Control Module (ECM) --> «Diagnostic Mode 04 - Erase DTC Memory»(ref-289213-S09339984582008062700000) , Diagnostic mode 4: Reset/erase diagnostic data.
  4. Generate readiness code --> «Readiness Code, Generating»(ref-289213-S27478988702008062700000) .

If no malfunctions are detected in the wires and the resistance values are OK

If no malfunction is detected in the wiring, replace the engine control module. Refer to --> Engine Control Modules, Replacing .