Diagnosis Description
Auto active test
Description
In auto active test mode, the IPDM E/R sends a drive signal to the following systems to check their operation.
- Oil pressure warning lamp
- Rear window defogger
- Front wiper (LO, HI)
- Parking lamp
- License plate lamp
- Tail lamp
- Side marker lamp
- Front fog lamp
- Headlamp (LO, HI)
- A/C compressor (magnet clutch)
- Cooling fan (LO, MID, HI)
Operation procedure
- Close the hood and lift the wiper arms from the windshield. (Prevent windshield damage due to wiper operation)NOTE: When auto active test is performed with hood opened, sprinkle water on windshield beforehand.
- Turn the ignition switch OFF.
- Turn the ignition switch ON, and within 20 seconds, press the driver door switch 10 times. Then turn the ignition switch OFF.CAUTION: Close passenger door.
- Turn the ignition switch ON within 10 seconds. Then the horn sounds once and the auto active test starts.NOTE: Only a vehicle with the vehicle security system, the horn sounds.
- The oil pressure warning lamp starts blinking when the auto active test starts.
- After a series of the following operations is repeated 3 times, auto active test is completed.NOTE: When auto active test mode has to be cancelled halfway through test, turn the ignition switch OFF.CAUTION:
- If auto active test mode cannot be actuated, check door switch system.
- Never start the engine.
Inspection in auto active test mode
When auto active test mode is actuated, the following 6 steps are repeated 3 times.
AUTO ACTIVE TEST MODE REFERENCE CHART
| Operation sequence | Inspection location | Operation | ||
|---|---|---|---|---|
| A | Oil pressure warning lamp | Blinks continuously during operation of auto active test. | ||
| 1 | Rear window defogger | 10 seconds | ||
| 2 | Front wiper motor | LO for 5 seconds → HI for 5 seconds | ||
| 3 |
|
10 seconds | ||
| 4 | Headlamp | LO 10 seconds → <=> OFF 5 times | ||
| 5 | A/C compressor (magnet clutch) | ON <=> OFF 5 times | ||
| 6 | Cooling fan | LO for 5 seconds → MID for 3 seconds → HI for 2 seconds | ||
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NOTE:
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Concept of auto active test
- IPDM E/R starts the auto active test with the door switch signals transmitted by BCM via CAN communication. Therefore, the CAN communication line between IPDM E/R and BCM is considered normal if the auto active test starts successfully.
- The auto active test facilitates troubleshooting if any systems controlled by IPDM E/R cannot be operated.
Diagnosis chart in auto active test mode
AUTO ACTIVE TEST MODE DIAGNOSIS CHART
| Symptom | Inspection contents | Possible cause | |
|---|---|---|---|
| Rear window defogger does not operate | Perform auto active test. Does the rear window defogger operate? | YES | BCM signal input circuit |
| NO |
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Any of the following components do not operate
|
Perform auto active test. Does the applicable system operate? | YES | BCM signal input circuit |
| NO |
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| Headlamps HI (daytime running light operation) do not operate | Perform auto active test. Do headlamps HI (daytime running light operation) operate? | YES |
|
| NO |
|
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| A/C compressor does not operate | Perform auto active test. Does the magnet clutch operate? | YES |
|
| NO |
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| Oil pressure warning lamp does not operate | Perform auto active test. Does the oil pressure warning lamp blink? | YES |
|
| NO |
|
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| Cooling fan does not operate | Perform auto active test. Does the cooling fan operate? | YES |
|
| NO |
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