Test FC-35A - A/C Pressure Sensor High (DTC 33)

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION . For appropriate wiring diagram, see WIRING DIAGRAMS at end of article.

Using DRB-II, read A/C pressure sensor voltage. If A/C pressure sensor voltage is more than 4.6 volts, go to step 5). If A/C pressure sensor voltage is less than 4.6 volts, go to next step.
Wiggle A/C pressure sensor connector and harness while watching DRB-II. If a change in A/C pressure sensor voltage is observed, repair connector or harness that caused voltage to change. Perform TEST VER-2. If a change in A/C pressure sensor voltage is not observed, go to next step.
At this time, the condition required to set fault is not present. A/C PRESSURE SENSOR HIGH fault sets if A/C pressure sensor signal voltage is more than 4.6 volts. Possible causes are: sensor signal wire open, sensor open internally, or sensor ground wire open.
Inspect wiring and connectors. Repair as required. Perform TEST VER-2. If wiring and connectors are okay, see INACTIVE FAULT CONDITION . Perform TEST VER-2.
If A/C pressure sensor voltage was more than 4.6 volts in step 1), disconnect A/C pressure sensor connector. Connect a jumper wire between A/C pressure sensor connector A/C pressure signal wire (Dark Blue wire) and ground wire (Black/Light Blue wire).
Using DRB-II, read A/C pressure sensor voltage. If voltage is less than one volt, replace A/C pressure sensor. Perform TEST VER-2. If voltage is more than one volt, connect a jumper wire between A/C pressure sensor connector A/C pressure signal wire (Dark Blue wire) and engine ground.
Read A/C pressure sensor voltage. If voltage is less than one volt, repair A/C pressure sensor connector ground wire. Perform TEST VER-2. If voltage is more than one volt, disconnect Powertrain Control Module (PCM) connector.
Using an external ohmmeter, check resistance of A/C pressure signal wire (Dark Blue wire) between A/C pressure sensor connector and PCM connector terminal No. 48.
If resistance is less than 5 ohms, replace PCM. Perform TEST VER-2. If resistance is more than 5 ohms, repair open A/C pressure sensor signal wire. Perform TEST VER-2.