2003 Model

WARNING: This page is about a different car, the 2003 Nissan Pathfinder and 2002 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

The rear window defogger system is controlled by the smart entrance control unit. The rear window defogger operates for approximately 15 minutes.

Power is supplied at all times to rear window defogger relay terminal No. 3, through 20-amp fuse No. 56, located in the fuse and fusible link box and to rear window defogger relay terminal No. 6, through 20-amp fuse No. 57, located in the fuse and fusible link box, to smart entrance control unit terminal No. 49, through 7.5-amp fuse No. 24, located in the fuse block (J/B).

With the ignition in the "ON" or "START" position, power is supplied through 7.5-amp fuse No. 11, located in the fuse block (J/B), to the rear window defogger relay terminal No. 1 and to smart entrance control unit terminal No. 27.

Ground is supplied to terminal No. 1 of rear window defogger switch (with auto A/C and NAVI, with manual A/C) or to terminal No. 32 of A/C auto amp. (with auto A/C and without NAVI) and to Smart Entrance Control Unit (SECU) terminals No. 43 and 64, through body grounds "M4" (located behind left kick panel), "M66" (located behind right kick panel), "M147" (located behind right side of dash) and "M157" (located behind left front kick panel).

When the rear window defogger switch is turned "ON", ground is supplied through terminal No. 2 of the rear window defogger switch (without A/C and NAVI, with manual A/C) or through terminal No. 31 of A/C auto amp. (with auto A/C and without NAVI), to smart entrance control unit terminal No. 14.

Terminal No. 37 of smart entrance control unit then supplies ground to the rear window defogger relay terminal No. 2. With power and ground supplied, the rear window defogger relay is energized. Power is supplied through terminals No. 5 and 7 of the rear window defogger relay to the rear window defogger.

The rear window defogger has an independent ground. With power and ground supplied, the rear defogger filaments heat and defog the rear window. When the system is activated, the rear window defogger indicator illuminates in the rear window defogger switch. Power is supplied to terminal No. 3 of rear window defogger switch (with auto A/C and NAVI, with manual A/C) or to terminal No. 30 of A/C auto Amp. (with auto A/C and without NAVI) from terminal No. 7 of rear window defogger relay.

Terminal No. 4 of the rear window defogger switch (with auto A/C and NAVI, with manual A/C) or terminal No. 32 of A/C auto amp. (with auto A/C and without NAVI) is grounded through body grounds "M4" (located behind left kick panel), "M66" (located behind right kick panel) and "M147" (located behind right side of dash) and "M157" (located behind left front kick panel).