Code 32 - BARO Sensor
NOTE:
The BARO sensor reacts like a MAP sensor in that it measures highest voltage when barometric pressure is highest.
Code 32 says that the ECM has seen a BARO pressure (measured in volts) too low at terminal "1" of the ECM.
NOTE:
The following step numbers refer to the numbers in the accompanying flow chart(s).
- This test checks voltage output from sensor at the ECM. Voltage normally falls within the middle range on table.
- Installing a jumper lead between Baro sensor harness terminals "B" and "C" should cause a voltage reading of more than 2.5 volts at the ECM. This indicates circuits 416 and 432 are okay.
- Possible causes of low voltage in step 2) are checked by measuring voltage between Baro harness terminal "A" and "C". A voltage reading of 4-6 volts limit possible causes to be an open circuit 433, a poor connection at ECM terminal "1" or a faulty ECM.
- This test verifies the presence of reference voltage at Baro harness terminal "C".