Mode I (Diagnostic Code Output)
- This mode checks the communication between the Body Control Module (BCM) and each Local Control Unit (LCU). If a malfunction is detected, self-diagnostic indicator lights (interior dome and step lights) will flash a 2-digit Diagnostic Trouble Code (DTC). To enter on-board diagnostic Mode I, turn ignition off. Set headlight switch and rear window defogger switch to OFF position. Ensure all doors are closed. Set interior light switch in center "O" position.
- Turn ignition on, and then off. Repeatedly press rear window defogger switch to ON position more than 10 times within 10 seconds, and then leave switch in the OFF position. Self-diagnostic indicator lights (dome and step lights) should illuminate. Turn ignition switch to ON position within 5 seconds after self-diagnostic indicator lights illuminate.
- Indicator lights should turn off. Self-diagnostic indicator lights should illuminate for 2 seconds, and then turn off for 2 seconds, indicating successful entry into self-diagnostic Mode I. Self-diagnostic indicator lights will now flash DTCs.
- The self-diagnostic lights will flash the first digit. Then a one-second pause separates the first and second digits of DTC. Then second digit is flashed. See Fig 1
.
- Record DTCs, and perform appropriate repair procedure. See DIAGNOSTIC TESTS
. To exit diagnostic mode, turn ignition off. To clear diagnostic codes, remove fuse No. 56 (7.5-amp), located in fuse and fusible link box.
Courtesy of NISSAN MOTOR CO., U.S.A.