Using the SST (NGS Tester)

NOTE: Perform the following test only when directed.

1. Turn the ignition switch to ON.




2. Disconnect the vacuum hose between the fuel tank pressure sensor and charcoal canister.

CAUTION: Do not apply vacuum out of specification. Doing so will damage the fuel tank pressure sensor.

Specification:

3. Apply pressure then vacuum to the fuel tank pressure sensor according to the following procedure.
1. 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 FTP V PID decreases accordingly as specified.
- If not as specified, perform the "Circuit Open/Short Inspection".

NOTE:
- The output voltage varies with the following condition.
- Input voltage 4.5 - 5.5 V
- Outside temperature 10 - 50 °C {50 - 122 °F}
- Sea level -200 - 3,000 m {-656 - 9,840 ft}

Circuit Open/Short Inspection
1. Disconnect the PCM connector.




2. Connect the SST (104 Pin Breakout Box) with the PCM disconnected.
3. Tighten the connector attaching bolt.

Tightening torque
7.9 - 10.7 N.m {80 - 110 kgf.cm, 69.5 - 95.4 in.lbf}

4. Inspect the following wiring harness for open or short (Continuity check).

Open circuit
- If there is no continuity, the circuit is open. Repair or replace the harness.
- FTP sensor terminal C (harness-side) and 104 pin breakout box terminal 90
- FTP sensor terminal A (harness-side) and 104 pin breakout box terminal 62
- FTP sensor terminal B (harness-side) and 104 pin breakout box terminal 91

Short circuit




- If there is continuity, the circuit is shorted. Repair or replace the harness.
- FTP sensor terminal C (harness-side) and power supply
- FTP sensor terminal C (harness-side) and body ground
- FTP sensor terminal A (harness-side) and power supply
- FTP sensor terminal A (harness-side) and body ground
- TP sensor terminal B (harness-side) and power supply