c3: Check VREF and Signal Return for Continuity
| Steps | _Breakout box installed
_Processor disconnected _Sensor that sent you here disconnected _Key Off _DVOM on 200 ohm scale _Measure resistance from Test Pin 26 at breakout box to VREF at vehicle harness connector of the sensor that sent you here. _Measure resistance from Test Pin 46 at breakout box to Signal Return at vehicle harness connector of the sensor that sent you here. |
| Result | Are both resistances less than 5 ohms? |
| Direction | YES
Reconnect sensors. Reference voltage OK. Rerun Quick Test NO Service open in VREF or Signal Return. Remove breakout box. Reconnect processor and sensor. Rerun Quick Test |