Quote:
Originally Posted by Discseven
Tested:
Speed sensor - static resistance = OK
Dynamic AC voltage = OK
Reference sensor - static resistance = OK
Dynamic AC voltage = OK
Test procedure is per Specialized ECU Repair:
Disconnect harness plug from ECU. Multimeter, set on ohms, connects the following pins:
Speed sensor: connect pins 8 and 27. Ohms to be between 600 - 1600.
Reference sensor: connect pins 25 and 26. Ohms to be between 600 - 1600.
Speed
Reference
For dynamic testing: Check car’s battery has 12+ volts = OK (12.6 v)
Gearbox in neutral, parking brake ON.
Multimeter set to AC voltage.
Speed sensor: connect pins 8 and 27 with multimeter. Crank engine. Voltage should be greater than 1.0 v = OK (is 2.6 v)
Reference sensor: connect pins 25 and 26 with multimeter. Crank engine. Voltage should be less than 1.0 v = OK (is 0 v)
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Typo right? AC voltage ~ 200-500 mv