Entering Self-Diagnostics
- Ensure in-car temperature is between 40-90°F (4-32°C). Simultaneously depress OFF and FLOOR buttons, then press AUTOMATIC button within 2 seconds. Display will show a pulse tracer going around center of display window for up to 30 seconds while test is running. Record all DTCs as displayed.
- If DTCs are displayed, perform test indicated. See EATC DTC INDEX table. If a condition exists and no DTCs are displayed, diagnose by symptom. Go to SYMPTOM INDEX table under SYMPTOM TESTS.
- Self-diagnostics can be initiated at any time with the resulting DTCs being displayed. Normal system operation is stopped when system is in self-diagnostic mode.
EATC DTC INDEX
| NGS Tester (DTC) Code (2) | Self-Test Fault (Run Time Code) (1) | Description | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| B1249 | 024 (022) | Blend Door Actuator Short | ||||||||
| B1249 | 024 (025) | Blend Door Actuator Failure | ||||||||
| B1251/B1253 | 031 (N/A) | In-Car Temp. Sensor Open | ||||||||
| B1251/B1253 | 030 (N/A) | In-Car Temp. Sensor Short | ||||||||
| B1255/B1257 | 041 (043) | Ambient Air Temp. Sensor Open | ||||||||
| B1255/B1257 | 040 (042) | Ambient Air Temp. Sensor Short | ||||||||
| B1261 | 050 (052) | Sunload Sensor Short To Ground | ||||||||
| U1041 (3) | N/A (N/A) | Vehicle Speed Sensor Signal | ||||||||
| U1073 (3) | N/A (N/A) | Engine Coolant Temp. Signal | ||||||||
| U1222 (4) | N/A (N/A) | Interior Lamp Data Signal | ||||||||
|
||||||||||