Diagnostic Aids
WARNING: This page is about a different car, the 2009 Pontiac Torrent and 2009 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
- The 5-volt reference 1 circuit provides 5 volts to the following sensors:
- The fuel tank pressure (FTP) sensor
- The engine oil pressure (EOP) sensor
- The 5-volt reference 2 circuit provides 5 volts to the following sensors:
- All four camshaft position (CMP) sensors
- Accelerator pedal position (APP) sensor 1
- The 5-volt reference 3 circuit provides 5 volts to the following sensors:
- Throttle position sensor (TPS) 1 and 2
- Crankshaft position (CKP) sensor
- Accelerator pedal position (APP) sensor 2
- A/C pressure sensor
- If the condition is intermittent, move the related harnesses and connectors with the engine operating. Monitor the scan tool 5-volt Reference Circuit Test Status parameters for the affected components. The circuit test status parameter will change from OK or Not Run to Fault if there is a condition with the circuit or a connection.