Throttle Position Sensor (TPS)
NOTE:
All procedures are performed with engine at normal operating temperature.
- Remove throttle body air hose. Install test harness (49 G018 901) between TPS and harness. Turn ignition on. With throttle closed, measure TPS connector voltage at Red and Black wires. See Fig 1 .
- Red wire should have 4.5-5.5 volts. Black wire should have zero volts. If voltage is incorrect, check battery voltage, wiring harness and connectors. If okay, see TESTS W/CODES and SYSTEM/COMP TESTS articles.
- If voltage in step 2) was okay, record Red wire voltage. Measure voltage at Blue wire while slowly opening and closing throttle valve. See Fig 1 . See B2600i, MPV (4-CYL.), MX-6 & 626 TPS VOLTAGE table.
- If voltage is not to specification, loosen TPS and rotate sensor until Blue wire voltage is correct. If TPS cannot be adjusted to specifications, replace TPS unit. When procedure is completed, remove negative battery cable and apply brake pedal for 5 seconds to erase control unit memory.
TPS VOLTAGE
| Red Wire Voltage | Blue Wire Voltage Closed Throttle | Blue Wire Voltage Wide Open Throttle |
|---|---|---|
| 4.50-4.59 | .37-.54 | 3.58-4.23 |
| 4.60-4.69 | .38-.55 | 3.66-4.32 |
| 4.70-4.79 | .39-.56 | 3.74-4.41 |
| 4.80-4.89 | .40-.57 | 3.82-4.51 |
| 4.90-4.99 | .40-.58 | 3.90-4.60 |
| 5.00-5.09 | .41-.60 | 3.97-4.70 |
| 5.10-5.19 | .42-.61 | 4.05-4.79 |
| 5.20-5.29 | .43-.62 | 4.13-4.88 |
| 5.30-5.39 | .44-.63 | 4.21-4.98 |
| 5.40-5.49 | .44-.64 | 4.29-5.07 |
| 5.50 | .44-.66 | 4.29-5.17 |