Component Testing
IMPORTANT:
You must perform the Circuit/System Testing before proceeding with the Component Test.
- Turn ON the ignition with the engine OFF and remove the BARO sensor.
- Install a 3-amp fused jumper wire between the 5-volt reference terminal C of the sensor and 5-volt reference.
- Install a jumper wire between the low reference terminal A of the sensor and ground.
- Install a jumper wire at the signal terminal B of the BARO sensor.
- Connect a DMM between the jumper wire from terminal B of the sensor and ground.
- Install the J 23738-A
to the BARO sensor vacuum port. Slowly apply vacuum to the sensor while monitoring the voltage on the DMM. The voltage should vary between 5.2-0 volts without any spikes or dropouts.
- If the voltage is not within the specified range or is erratic, replace the BARO sensor.