Using the SST 104 Pin Breakout Box

NOTE: The following vacuum values are indicated by relative pressure from atmospheric pressure.

1. Remove the PCM.




2. Connect the SST 104 Pin Breakout Box to the PCM as shown.
3. Tighten the connector bolt.

Tightening torque: 7.9-10.7 Nm (69.5-95.4 in.lbs.)

CAUTION: Do not apply a vacuum outside of the specified limits. Doing so will damage the fuel tank pressure sensor.

4. Turn the ignition switch to ON.
5. Apply pressure then a vacuum to the fuel tank pressure sensor according to the following procedure.




NOTE: The output voltage varies with the measuring condition.

6. Decrease the applied pressure from +6.66 kPa (+50 mmHg, +1.97 inHg) to -6.66 kPa (-50 mmHg, -1.97 inHg) and verify that the PCM terminal 62 voltage decreases accordingly as specified.




7. If not as specified, perform the following inspection.




(1) Harness Continuity
- Between PCM terminal 91 and fuel tank pressure sensor terminal A
- Between PCM terminal 62 and fuel tank pressure sensor terminal B
- Between PCM terminal 90 and fuel tank pressure sensor terminal C

(2) If there is no Continuity, repair or replace related harness.
(3) Terminal voltage (Ignition switch ON)
- Fuel tank pressure sensor terminal A voltage:
Ground (Below 1.0 V)
- Fuel tank pressure sensor terminal C voltage:
Constant voltage (4.5-5.5 V)

(4) If terminal voltage is incorrect, check the PCM.

8. If terminal voltage is correct and it there is harness continuity, replace the fuel tank pressure sensor.