DESCRIPTION & OPERATION
| WARNING | Vehicles are equipped with air bag supplemental restraint system. Before attempting any repairs involving steering column, instrument panel or related components, see SERVICE PRECAUTIONS and DISABLING & ACTIVATING AIR BAG SYSTEM in appropriate AIR BAG RESTRAINT SYSTEMS article. |
| CAUTION | When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery. |
| CAUTION | All Intelligent Power Distribution Module (IPDM) integrated relays cannot be removed. |
Intelligent Power Distribution Module (IPDM) integrates the relay box and fuse block which were originally placed in engine compartment. It controls integrated relay via IPDM control circuit.
IPDM integrated control circuit performs "ON-OFF" operation of relay, CAN communication control, oil pressure switch signal reception, etc.
It controls operation of each electrical part via BCM and CAN communication lines. For BCM, see BODY CONTROL MODULE -- ALTIMA article. For CAN communication, see CAN SYSTEM -- ALTIMA article.
Description
In auto active test mode, operation inspection can be performed when IPDM sends a drive signal to the listed systems
- Rear window defogger.
- Front wipers.
- Tail and parking lamps.
- Front fog lamps.
- Headlamps (HI and LO).
- A/C compressor (magnet clutch).
- Cooling fan.
Operation Procedure
Note. When auto active test is performed with hood opened, sprinkle water on windshield beforehand.
- Close hood and lift wiper arms away from windshield (to prevent glass damage by wiper operation).
- Turn ignition switch "OFF".
- Turn ignition switch "ON" and, within 10 seconds, press left front door switch 10 times. Then turn ignition switch "OFF".
- Turn ignition switch "ON".
- When auto active test mode is actuated, horn chirps once, and oil pressure warning lamp starts blinking.
- After a series of operations is repeated 3 times, auto active test is completed.