Instrument Panel, Gauges and Warning Indicators: Testing and Inspection

Coolant temperature, oil pressure and fuel gauges can be checked using tester VAG 1301, or equivalent. When using the tester, disconnect the sensor for the gauge being checked. Select proper tester unit setting as listed below, for unit being checked. If gauge indicates incorrect or no value, check gauge wiring for an open or short circuit. If gauge electrical circuit is satisfactory, replace gauge unit. If gauge reading is within one needle width of the indicated reading, replace gauge sending unit.


Coolant Temperature Gauge Test Specifications

Gauge Reading deg.C 40
Tester Setting 557 - 558
Resistance (Ohms) 287.4

Gauge Reading deg.C 60
Tester Setting 247 - 248
Resistance (Ohms) 134

Gauge Reading deg.C 80
Tester Setting 117 - 118
Resistance (Ohms) 69.1

Gauge Reading deg.C 100
Tester Setting 55 - 56
Resistance (Ohms) 38.5

Gauge Reading deg.C 115
Tester Setting 30 - 31
Resistance (Ohms) 25.8

Fuel Gauge Test Specifications

Gauge Reading deg.C RES
Tester Setting 105 - 106
Resistance (Ohms) 63.2

Gauge Reading deg.C 1/4
Tester Setting 63 - 64
Resistance (Ohms) 42.2

Gauge Reading deg.C 1/2
Tester Setting 21 - 22
Resistance (Ohms) 21.2

Gauge Reading deg.C 3/4
Tester Setting --
Resistance (Ohms) 8.6

Gauge Reading deg.C Full
Tester Setting --
Resistance (Ohms) 2.8

Oil Pressure Gauge Test Specifications

Gauge Reading deg.C 1
Tester Setting 37 - 38
Resistance (Ohms) 29.6

Gauge Reading deg.C 2
Tester Setting 110 - 111
Resistance (Ohms) 65.3

Gauge Reading deg.C 3
Tester Setting 177 - 178
Resistance (Ohms) 98.9

Gauge Reading deg.C 4
Tester Setting 246 - 247
Resistance (Ohms) 133.6

Gauge Reading deg.C 5
Tester Setting 349 - 350
Resistance (Ohms) 184