1.CHECK MODE DOOR MOTOR POWER SUPPLY CIRCUIT

1. Turn the ignition switch ON.
2. Check voltage between the mode door motor harness connector and ground.

(+) | (−) | Voltage (Approx.)
Mode door motor | —
Connector | Terminal
M253 | 1 | Ground | 12 V

Is the inspection result normal?
YES>>GO TO 2.
NO>>Repair the harnesses or connectors.
2.CHECK MODE DOOR MOTOR SIGNAL
Check output waveform between the mode door motor harness connector and ground with the oscilloscope.

(+) | (−) | Output waveform
Mode door motor | —
Connector | Terminal
M253 | 3 | Ground |

Is the inspection result normal?
YES>>GO TO 3.
NO>>Repair the harnesses or connectors.
3.CHECK MODE DOOR MOTOR GROUND CIRCUIT

1. Turn the ignition switch OFF.
2. Disconnect the mode door motor connector.
3. Check for continuity between the mode door motor harness connector and ground.

   Mode door motor | — | Continuity
   Connector | Terminal
   M253 | 2 | Ground | Existed

Is the inspection result normal?
YES>>Replace the Mode door motor.
NO>>Repair the harnesses or connectors.