Position Memory Control Module Inspection
- Measure the voltage at each terminal is as indicated in the Terminal Voltage Tables.
- If the voltage is not as specified in the Terminal Voltage Table (Reference), inspect the parts under "Inspection item(s)" and related wiring harnesses.
- If the system does not work properly even though the inspection items or related wiring harnesses do not have any malfunction, replace the position memory control module.
Terminal Voltage Table (Reference)
TERMINAL VOLTAGE SPECIFICATION
| Terminal | Signal name | Connected to | Measured condition | Voltage (V) | Inspection item(s) |
|---|---|---|---|---|---|
| 1A | Power supply | F38 50A fuse | Under any condition | B+ |
|
| 1B | Power supply |
|
Under any condition | B+ |
|
| 1C | Ignition power supply | F49 15A fuse | Ignition switched ON (engine off) | B+ |
|
| Ignition switched OFF harness (LOCK) | 1.0 or less | ||||
| 1D | Slide motor output (forward) | Slide motor | While slide motor is moving to forward | B+ |
|
| Other | Voltage cannot be measured. | ||||
| 1E | Tilt motor output (down) | Tilt motor | While tilt motor is moving to down | B+ |
|
| Other | Voltage cannot be measured. | ||||
| 1F | Slide motor output (backward) | Slide motor | While slide motor is moving to backward | B+ |
|
| Other | Voltage cannot be measured. | ||||
| Tilt motor output (up) | Tilt motor | While tilt motor is moving to up | B+ |
|
|
| Other | Voltage cannot be harness measured. | ||||
| 1G | Recliner motor output (forward) | Recliner motor | While recliner motor is moving to forward | B+ |
|
| Other | Voltage cannot be harness measured. | ||||
| 1H | Recliner motor output (backward) | Recliner motor | While recliner motor is moving to backward | B+ |
|
| Other | Voltage cannot be harness measured. | ||||
| Lift motor output (up) | Lift motor | While lift motor is moving to up | B+ |
|
|
| Other | Voltage cannot be harness measured. | ||||
| 1I | Lift motor output (down) | Lift motor | While lift motor is moving to down | B+ |
|
| Other | Voltage cannot be harness measured. | ||||
| 1J | Heater power supply | F14 20A fuse | Under any condition | B+ |
|
| 1K | Seat heater output 2 |
|
Turn on seat heater | +B |
|
| Other | 1.0 or less | ||||
| 1L | Heater power supply | F14 20A fuse | Under any condition | B+ |
|
| 1M | Seat heater output 1 |
|
Turn on seat heater | B+ |
|
| Other | 1.0 or less | ||||
| 1N | - | - | - | - | - |
| 1O | - | - | - | - | - |
| 1P | Signal GND1 input | Body ground | Under any condition | Approx. 0 |
|
| 1Q | Power GND | Body ground | Under any condition | Approx. 0 |
|
| 1R | Signal GND2 input | Body ground | Under any condition | Approx. 0 |
|
| 2A | LIN | Dash-electrical supply unit | Terminal used for communication therefore determination based on terminal voltage is not possible. | ||
| 2B | Slide switch input (forward) | Driver-side power seat switch | Press the slide switch to forward | 1.0 or less |
|
| Other | 4.8 or more | ||||
| 2C | Slide switch input (backward) | Driver-side power seat switch | Press the slide switch to backward | 1.0 or less |
|
| Other | 4.8 or more | ||||
| 2D | Recliner switch input (forward) | Driver-side power seat switch | Press the recliner switch to forward | 1.0 or less |
|
| Other | 4.8 or more | ||||
| 2E | Recliner switch input (backward) | Driver-side power seat switch | Press the recliner switch to backward | 1.0 or less |
|
| Other | 4.8 or more | ||||
| 2F | Tilt switch input (up) | Driver-side power seat switch | Press the tilt switch to up | 1.0 or less |
|
| Other | 4.8 or more | ||||
| 2G | Tilt switch input (down) | Driver-side power seat switch | Press the tilt switch to down | 1.0 or less |
|
| Other | 4.8 or more | ||||
| 2H | Lift switch input (up) | Driver-side power seat switch | Press the lift switch to up | 1.0 or less |
|
| Other | 4.8 or more | ||||
| 2I | Lift switch input (down) | Driver-side power seat switch | Press the lift switch to down | 1.0 or less |
|
| Other | 4.8 or more | ||||
| 2J | Position sensor power supply | Position sensor | Under any condition | B+ |
|
| 2K | Slide motor pulse | Slide position sensor | Measure the waveform while driving motor operation using the oscilloscope. | High output: Voltage cannot be measured. |
|
| Low output: 1.0 or less | |||||
| Slide motor stopped | Voltage cannot be measured. | ||||
| 2L | Recliner motor pulse | Recliner position sensor | Measure the waveform while driving motor operation using the oscilloscope. | High output: +B |
|
| Low output: 1.0 or less | |||||
| Recliner motor stopped | Voltage cannot be measured. | ||||
| 2M | Tilt motor pulse | Tilt position sensor | Measure the waveform while driving motor operation using the oscilloscope. | High output: Voltage cannot be measured. |
|
| Low output: 1.0 or less | |||||
| Tilt motor stopped | Voltage cannot be measured. | ||||
| 2N | Lift motor pulse | Lift position sensor | Measure the waveform while driving motor operation using the oscilloscope. | High output: Voltage cannot be measured. |
|
| Low output: 1.0 or less | |||||
| Lift motor stopped | Voltage cannot be measured. | ||||
| 2O | Thermistor input2 |
|
The terminal voltage cannot be measured. | ||
| 2P | Thermistor input1 |
|
The terminal voltage cannot be measured. | ||
| 2Q | - | - | - | - | - |
| 2R | - | - | - | - | - |
| 2S | - | - | - | - | - |
| 2T | - | - | - | - | - |
| 2U | - | - | - | - | - |
| 2V | - | - | - | - | - |
| 2W | - | - | - | - | - |
| 2X | Sensor GND |
|
Under any condition | 1.0 or less |
|