Symptom Related Diagnostic Procedures

Auto Active Test

DESCRIPTION
- In auto active test mode, operation inspection can be performed when IPDM E/R sends a drive signal to the following systems:
- Front wipers
- Tail, parking, and license lamps
- Front fog lamps
- Headlamps (Hi, Lo) (Daytime light system if equipped)
- A/C compressor (magnetic clutch)
- Cooling fan

OPERATION PROCEDURE
1. Close hood and front door RH, and lift wiper arms away from windshield (to prevent glass damage by wiper operation).

NOTE: When auto active test is performed with hood opened, sprinkle water on windshield before hand.

2. Turn ignition switch OFF.
3. Turn ignition switch ON and, within 20 seconds, press front door switch LH 10 times. Then turn ignition switch OFF.
4. Turn ignition switch ON within 10 seconds after ignition switch OFF.
5. When auto active test mode is actuated, horn chirps once.
6. After a series of operations is repeated three times, auto active test is completed.

NOTE: When auto active test mode has to be cancelled halfway, turn ignition switch OFF.

CAUTION: Be sure to perform BL-35, "Door Switch Check (King Cab)" King Cab or BL-37, "Door Switch Check (Crew Cab)" Crew Cab when the auto active test cannot be performed.




INSPECTION IN AUTO ACTIVE TEST MODE
- When auto active test mode is actuated, the following six steps are repeated three times.

Concept of Auto Active Test
- IPDM E/R actuates auto active test mode when it receives door switch signal from BCM via CAN communication line. Therefore, when auto active test mode is activated successfully, CAN communication between IPDM E/R and BCM is normal.
- If any of the systems controlled by IPDM E/R cannot be operated, possible cause can be easily diagnosed using auto active test.




Diagnosis chart in auto active test mode