When system measurements of components are to be performed, the sequence given in the table must be followed. The given measured values were obtained using the digital multimeter VAG 1315 or VAG 1526. Other values may be obtained when using other multimeters with different internal resistances. The given measured values are valid at an ambient temperature of 0°C to 40°C.
The car battery must be charged and properly connected.
Check fuse #18 and replace if necessary.
Check the fuel pump and fuel pump relay.
Check the reliability of the connection between the engine ground and the vehicle body ground.
Turn off the ignition.
Disconnect the plug connector from the Digifant system control unit (on the right under the water drainage casing). At the same time, press the fixing clamps on both sides of the plug, see above.
The contacts of the plug block are numbered. Measure the resistance between the indicated contacts. Make sure that the contacts are not damaged during the measurements. Perform the check in accordance with the table.
1) At the disconnected plug of the knock sensor.
2) At the disconnected plug of the throttle potentiometer.
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