Ford Corsar Repair Manual page 240

TROUBLE DIAGNOSES
.
12v Supply
7 V Signal
-
~ r & n d
Resistance: Approximately 70R
Electrical Components Inspection (Cont'd)
Water Temperature Sensor
Remove sensor and test its resistance value in response t o tem-
perature change.
Vehicle Speed Sensor (VSS)
1. Remove VSS from transaxle.
2. With sensor connected t o vehicle harness and ignition "ON",
connect a voltmeter t o confirm 12v supply.
3. With a ohmmeter, check ground circuit for continuity.
4. With voltmeter connected t o signal line, rotate the pinion and
confirm voltage changes from Ov t o 7 . 5 ~ (approx.) 10 times per
sensor revolution.
Temperature "C
1 00
9 0
7 0
4 0
3 0
2 0
Air Regulator
1. Remove connecting hoses and visually check shutter
operation.
Before starting at 20°C
-
Open.
After warm up
-
Closed.
2. Disconnect air regulator harness connector.
3. Check regulator internal resistance as shown.
4. Connect a voltmeter across the harness plug. Turn ignition "ON",
voltmeter should read 12vfor approximately 3 seconds after key
"ON".
Resistance Value
Q
(approximate)
188
247
4 4 4
1,191
1,716
2,253