Workshop Repair Manuals

Volkswagen Workshop Manuals

[PREV PAGE] [NEXT PAGE]

volkswagen Workshop Repair Guides


New Beetle L4-2.0L (AZG) (2003)

Sensors and Switches > Sensors and Switches - Cooling System > Engine - Coolant Temperature Sensor/Switch > Coolant Temperature Sensor/Switch (For Computer) > Component Information > Testing and Inspection > With Manufacturer's Scan Tool > Page 871

Page 3
background image

-

Disconnect 4-pin connector from Engine Coolant Temperature (ECT) Sensor -G62- with Engine Coolant Temperature (ECT) Sensor -G2- (arrow).

If indication jumps to approx.. -40.0 degrees C:

-

End diagnosis and switch ignition off.

-

Replace Engine Coolant Temperature (ECT) Sensor -G62-:
-

Vehicles with engine code AVH, AZG, item 17,

-

Vehicles with engine code BDC, item 15.

-

Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data.  

-

Generate readiness code.  See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles
and Readiness Codes

If indication remains at approx.. 140.0 degrees C:

-

End diagnosis and switch ignition off.

-

Check wires according to wiring diagram.

Checking wiring

-

Connect test box to control module wiring harness, connect test box for wiring test.  See: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting/With Generic Scan Tool/Test Box,
Connecting For Wiring Test

-

Check wires between test box and 4-pin connector for open circuit according to wiring diagram.
-

Terminal 3 + socket 93

-

Terminal 4 + socket 108

-

Wire resistance: max. 1.5 Ohms

-

Also check wires for short circuit to each other, to vehicle Ground (GND) and to B+. Specified value: Infinite Ohms

If no malfunctions are found in wires:

-

Measure resistance at Engine Coolant Temperature (ECT) Sensor -G62-, terminals C (signal) and D (Ground -GND-).

Sensors and Switches > Sensors and Switches - Cooling System > Engine - Coolant Temperature Sensor/Switch > Coolant Temperature Sensor/Switch (For Computer) > Component Information > Testing and Inspection > With Manufacturer's Scan Tool > Page 871

[PREV PAGE] [NEXT PAGE]