Fuse location for rear heat an dair

System Description NEEL0216 MODELS WITHOUT POWER DOOR LOCKS NEEL0216S01 The rear window defogger system is controlled by the rear window defogger timer. The rear window defogger operates only for approximately 15 minutes. The rear window defogger switch is integral to the air control. Power is supplied at all times
to rear window defogger relay terminal 5
through 20A fuse [No. 25, located in the fuse block (J/B)]. With the ignition switch in the ON or START position, power is supplied
through 10A fuse [No. 5, located in the fuse block (J/B)]
to rear window defogger relay terminal 1, and
to rear window defogger timer terminal 1. Ground is supplied to air control (rear window defogger switch) terminal 8 and rear window defogger timer terminal 4 through body grounds M14 and M68. With the rear window defogger switch (located in air control) ON, ground is supplied
to rear window defogger timer terminal 3
through air control (rear window defogger switch) terminal 8. Rear window defogger timer terminal 2 then supplies ground to the rear window defogger relay terminal 2. With power and ground supplied, the rear window defogger relay is energized. Power is supplied
through terminal 3 of the rear window defogger relay
to rear window defogger terminal +. Rear window defogger terminal - is grounded through body ground R102. With power and ground supplied, the rear window defogger filaments heat and defog the rear window. When the system is activated, the rear window defogger indicator illuminates in the air control. Power is supplied
from rear window defogger relay terminal 3
to air control (rear window defogger switch) terminal 4. Air control terminal 8 is grounded through body grounds M14 and M68. MODELS WITH POWER DOOR LOCKS NEEL0216S02 The rear window defogger system is controlled by the smart entrance control unit. The rear window defogger operates only for approximately 15 minutes. The rear window defogger switch is integral to the air control. Power is supplied at all times
to rear window defogger relay terminal 5
through 20A fuse [No. 25, located in the fuse block (J/B)] and
to smart entrance control unit terminal 49
through 7.5A fuse [No. 28, located in the fuse block (J/B)]. With the ignition switch in the ON or START position, power is supplied
through 10A fuse [No. 5, located in the fuse block (J/B)]
to rear window defogger relay terminal 1 and
to smart entrance control unit terminal 27. Ground is supplied to air control (rear window defogger switch) terminal 8 and smart entrance control unit terminals 43 and 64 through body grounds M14 and M68. With the rear window defogger switch (located in air control) ON, ground is supplied
to smart entrance control unit terminal 14
through air control (rear window defogger switch) terminal 1. Smart entrance control unit terminal 37 then supplies ground to the rear window defogger relay terminal 2. With power and ground supplied, the rear window defogger relay is energized. Power is supplied
through terminal 3 of the rear window defogger relay
to rear window defogger terminal +.
Rear window defogger terminal - is grounded through body ground R102. With power and ground supplied, the rear window defogger filaments heat and defog the rear window. When the system is activated, the rear window defogger indicator illuminates in the air control. Power is supplied
from rear window defogger relay terminal 3
to air control (rear window defogger switch) terminal 4. Air control (rear window defogger switch) terminal 8 is grounded through body grounds M14 and M68

Does the indicator light come on when you turn the defroster on? Have you checked to see where the wires come in on the rear window to see if they might have gotten disconnected. It usually happens right at the point where the wire connects to the grid.

Sounds like the head gasket is leaking

If it is blowing cold air, that means the coolant level is low, the heater core has no coolant in it. Sounds like a head gasket is leaking.

Depending on how long the other struts were bad the compressor may have locked up from heating up tryying to pump old one up, this is common but not definite, you will need to check the compressor fuse and also test the compressor to make sure it runs and is producing air, there is also a relay to check, all this is located in the under hood fuse/relay box. check the owner manual for location in box. there is a module on this car behind rear seat for the suspension that will need to be tested also. i would check all the fuses and check the fuses also under the rear seat.hope this is helpful.

There are two fuse boxes. A baqttery junction box under the hood on the drivers side and one inside on drivers side. Good luck.

Fuse/Relay

Location

Fuse Amp

Rating

Power Distribution Box

Description

1 60A** I/P Fuse Panel

2 40A** Blower Motor Relay

3 50A** 4 Wheel Anti-Lock Brake System

(4WABS) Module

4 30A** Power Windows, Power Moon

Roof, Power Seat

5 50A** Ignition Switch, Starter Relay

6 20A** Transfer Case Relay

7 - Not Used

8 20A** Air Suspension

9 40A** Air Suspension

10 30A** PCM Power Relay

1 10A* A/C Relay

2 30A* Heated Seats

3 30A* Heated Backlight

4 15A* Fog Lamps and Daytime Running

Lamps

5 4 3 2 1

10 9 8 7 6

12 11 10 9

8 7 6 5

4 3 2 1

15 14 13

2 1 1

9

6

10

8

7

5

4

1

3 2

175

MEGAFUSE

Roadside emergencies

197

Fuse/Relay

Location

Fuse Amp

Rating

Power Distribution Box

Description

5 - Not Used

6 10A* Powertrain Control Module

7 30A* 4 Wheel Anti-Lock System

(4WABS) Module

8 15A* Rear Wiper Motor

9 20A* Fuel Pump Relay and RAP

Module

10 15A* Horn Relay

11 15A* Parklamps Relay and Mainlight

Switch

12 30A* Mainlight Switch and

Multifunction Switch

13 15A* Heated Oxygen Sensor, EGR

Vacuum Regulator, EVR Solenoid,

Camshaft Position (CMP) Sensor,

Canister Vent Solenoid

14 30A* Generator/Voltage Regulator

15 - Not Used

1 - Wiper Park Relay

2 - A/C Relay

3 - Wiper High/Low Relay

4 - PCM Power Relay

5 - Fuel Pump Relay

6 - Starter Relay

7 - Horn Relay

8 - Rear Wipe Down Relay

9 - Blower Motor Relay

10 - Rear Wipe Up Relay

1 - Not Used

1 - DRL Diode
2 - Electronic Engine Controls Diode

The large fuse you checked is for the rear fan blower motor. The fuse you need to check is for the fan motor relays and rear mode control motor. It is fuse No. 3 (7.5A) located in the driver's under dash kick panel fuse box.

If fuse No. 3 is blown and you replace the fuse and it blows immediately, you'll have to check the five relays and the mode control motor all located near the rear A/C unit in the right aft sidewall. Most likely, the mode control doors have become jammed and that is why the fuse blows. The doors shift air from overhead vents (cool) to floor vents (heat).

If the fuse is fine, the trouble is probably with the blower motor itself or the wiring to the blower motor is broken, or there is a bad ground.

The fuse block is located next to the air filter on the driver's side of the engine. Lift the cover to gain access.

The Maxi-Fuses and relays are located next to the engine compartment fuse block on the driver’s side of the engine.

The rear fuse block is located on the front wall of the trunk behind the rear seat on the driver's side. Loosen the four trunk trim fasteners and pull the trim away from the fuse block to gain access.

For other details and description about specific fuse can check the 1996 Cadillac Seville STS - Owners Manual (page 314 and next).

Hope helps (remember comment and rated this).

#26 40 amp orange fuse ---it is under the hood of vehicle in fuse box. Relay labeled "F" in passenger comp on juction block behind left side of dash is for rear blower motor, front blower motor relay is behind juction box.

Here's what the system looks like. left rear panel
please rate as fixya if this solves your issue


Check fuse #7, 5 amp dash fuse panel
check fuse # 13, 30 amp in power dist. box under hood I think
check auxilaiary a/c relay in RPO Relay box (rear floor panel)
check fuse #23, 10 amp in dash fuse panel