Inspection & Adjustment
- Warm engine to normal operating temperature. Remove throttle body air inlet hose. Disconnect TP sensor connector. Install Test Harness (49 G018 901) between TP sensor and harness.
- Turn ignition on. Ensure throttle valve is fully closed. Using a voltmeter capable of measuring voltage variations of.01 volt, measure voltage at Red and Black wires of test harness. (Scheme 1)
- If voltage is 4.5-5.5 volts at Red wire and about zero volts at Black wire, go to next step. If voltage values are not as specified, check battery voltage and wiring harness between Electronic Control Unit (ECU) and TP sensor. If battery voltage and harness are okay, replace ECU.
- Record voltage at Red wire. Measure voltage at Blue wire of test harness while varying throttle from closed to wide open position. Ensure voltage is within specification and voltmeter indicates a smooth voltage transition as throttle goes from closed to wide open position. See TP SENSOR VOLTAGE (B2200 PFI, B2600i & MPV 2.6L) table.
- If voltage is not as specified, loosen TP sensor screw. Rotate TP sensor until Blue wire voltage is as specified. Tighten TP sensor screw. If TP sensor cannot be adjusted to specification, replace TP sensor. Disconnect negative battery cable and apply brake pedal for 5 seconds to erase ECU memory.
- If voltage is as specified, turn ignition off. Disconnect test harness. Reconnect TP sensor connector. Disconnect negative battery cable and apply brake pedal for 5 seconds to erase ECU memory.
| Red Wire Volts | Blue Wire Volts: Closed Throttle | Blue Wire Volts: WOT |
|---|---|---|
| 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 |
TP SENSOR VOLTAGE
Scheme 1
- Turn ignition off. Connect Harness Adapter (49 F018 902) and Signal Monitor (49 9200 162) to vehicle. (Scheme 2) Turn ignition on. Manually rotate throttle lever, and check TP sensor signal. See «TP SENSOR VOLTAGE (RX7)»(ref-18257-S16196155432000123000000) table.
- If voltage is not within specification, close throttle. Loosen TP sensor screws, and rotate TP sensor. (Scheme 3) Recheck TP sensor signal. Turn ignition off. Disconnect test equipment. Disconnect negative battery cable and depress brake pedal for 20 seconds. Reconnect negative battery cable.
| Wire Color To Ground | Closed Throttle Volts | WOT Volts |
|---|---|---|
| Green/Red (3F) (1) | .75-1.25 | 4.8-5.0 |
| Black/Green (3G) (1) | 0.7-1.0 | 4.2-4.6 |
| (1) PCM terminal pin No. in parentheses. | ||
| (1) | PCM terminal pin No. in parentheses. |
TP SENSOR VOLTAGE
