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Sensor Operating Specifications

AIRFLOW SENSOR POTENTIOMETER RESISTANCE TEST

Application & Conditions Ohms
Cabriolet & Fox
Ignition On (1) 500-1000
Move Sensor Flap (2) Changing
Corrado
Ignition On (3) 500-1000
Move Sensor Flap (4) Changing
Golf GL & Jetta
Ignition On (1) 500-1000
Move Sensor Flap (2) Changing
GTI, Jetta GLI & Passat
Sensor At Rest (5) 4500-5500
Sensor At Rest (6) 3800-4200
Vanagon
Sensor At Rest (7) Less Than 1000
Sensor At Rest (8) More Than 4000
(1) Measure resistance between terminals No. 6 and 17.
(2) Measure resistance between terminals No. 17 and 21.
(3) Measure resistance between terminals No. 15 and 28.
(4) Measure resistance between terminals No. 13 and 15.
(5) Measure resistance between terminals No. 23 and 26.
(6) Measure resistance between terminals No. 26 and 35.
(7) Measure resistance between terminals No. 14 and 17.
(8) Measure resistance between terminals No. 17 and 18.
COLD START VALVE TEST

Application Between Terminals Ohms
2.0L No. 14 & 16 8-13
COOLANT TEMPERATURE SENSOR RESISTANCE TEST

Application Temperature °F (°C) Ohms
Cabriolet, Corrado & Golf GL (1) 122 (50) 800-1000
" 176 (80) 250-350
" 212 (100) 100-200
Fox & Jetta (2) 122 (50) 800-1000
" 176 (80) 250-350
" 212 (100) 100-200
Passat (3) 122 (50) 800-1000
" 176 (80) 250-350
" 212 (100) 100-200
Vanagon (1) 122 (50) 800-1000
" 176 (80) 250-350
" 212 (100) 100-200
(1) Measure resistance between terminals No. 6 and 10.
(2) Measure resistance between terminals No. 11 and 28.
(3) Measure resistance between terminals No. 3 and 35.
CYLINDER HEAD TEMP. SENSOR RESISTANCE TEST (VANAGON) (1)

Temperature °F (°C) Ohms
68 (20) 2100-2900
176 (80) 270-390
(1) Measure resistance between terminal No. 13 and ground.
DIFFERENTIAL PRESSURE REGULATOR TEST

Application Between Terminals Ohms
1.8L No. 10 & 12 17.5-21.5
2.0L No. 4 & 5 15-20
EGR TEMP. SENSOR RESISTANCE TEST (2.0L) (1)

Temperature °F (°C) Ohms
122 (50) 500,000-600,000
257 (125) 35,000-40,000
392 (200) 4500-6500
(1) Measure resistance between terminals No. 9 & 35.
INTAKE AIR TEMPERATURE SENSOR RESISTANCE TEST

Application Temperature °F (°C) Ohms
Cabriolet & Corrado (1) 32 (0) 5000-6500
" 122 (50) 950-1000
" 212 (100) 150-250
Fox, Golf & Jetta (1) 32 (0) 5000-6500
" 122 (50) 950-1000
" 212 (100) 150-250
Vanagon (2) 68 (20) 2300-2700
(1) On Cabriolet and Corrado (California), measure resistance between terminals No. 28 and 30. On all others, measure resistance between terminals No. 6 and 9.
(2) Measure resistance between terminals No. 6 and 14.
OIL TEMP. SENSOR RESISTANCE TEST (VANAGON) (1)

Temperature °F (°C) Ohms
14 (10) 7000-11,600
68 (20) 2100-3100
176 (80) 270-390
(1) Measure resistance between temp. sensor & ground.
OXYGEN SENSOR RESISTANCE TEST

Application Condition Ohms
Cabriolet, Fox & Golf GL
Federal (1) Disconnect & Ground Harness Wire 0.5
" Reconnect Sensor Open Ckt
Calif. (2) Disconnect & Ground Harness Wire 1
" Reconnect Sensor Open Ckt
Corrado (3) Disconnect Sensor 1.5
" Reconnect Sensor Open Ckt
GTI, Jetta GLI & Passat
Federal (4) Disconnect Sensor & Ground GRN Wire 0
" Reconnect Sensor Open Ckt
Calif. (5) Disconnect & Ground Harness Wire 1
" Reconnect Sensor Open Ckt
Vanagon (6) Disconnect & Ground Harness Wire 0
" Reconnect Sensor Open Ckt
(1) Measure resistance between terminals No. 2 and 13.
(2) Measure resistance between terminals No. 2 and 8.
(3) Measure resistance between terminals No. 1 and 2.
(4) Measure resistance between terminals No. 7 and 35.
(5) Measure resistance between terminals No. 2 and 8.
(6) Measure resistance between terminals No. 5 and 7.
THROTTLE POSITION SENSOR RESISTANCE TEST

Application Position Ohms
Except Corrado (1) Disconnect Potentiometer 1.5
Corrado (2) Throttle Closed 0.5
" Off Full Throttle Open Circuit
" Full Throttle 0.5
(1) Measure resistance between terminals No. 1 and 34.
(2) Measure resistance between terminals No. 6 and 11.
VACUUM SENSOR RESISTANCE TEST (1)

Condition Ohms
Move Sensor Plate Changing
(1) Measure resistance between terminals No. 15 & 19.
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