Air Conditioning (Rear)

1. BLOWER MOTOR (REAR HEATER) OPERATION
Current is applied at all times through the RR A/C fuse to TERMINAL 1 of the rear heater relay.

When the ignition SW is turned ON, the current flows through HEATER fuse to TERMINAL 3 of the rear heater relay to TERMINAL 5 to TERMINAL 7 of the heater blower SW (Front), rear HI relay (Coil side), rear LO relay (Coil side), rear M1 relay (Coil side), rear M2 relay (Coil side) and rear relay (Coil side).

1. Heater blower SW (Front) operation
* Low speed operation
When the blower SW is moved to LO position, the current to TERMINAL 7 of the blower SW flows to TERMINAL 10 to GROUND, causing the rear heater relay to turn ON. This causes the current to flow through the rear heater relay (Point Side) to TERMINAL 2 of the blower motor (Rear heater) to TERMINAL 1 to TERMINAL 4 of the rear relay to TERMINAL 2 to TERMINAL 4 of the blower resistor (Rear heater) to TERMINAL 1 to TERMINAL 4 of the rear LO relay to TERMINAL 3 to TERMINAL 4 of the blower SW to TERMINAL 10 to GROUND, rotating the blower motor at low speed.

* Medium speed operation (Operation at M1, M2)
When the blower SW is moved to M1 position, the current to TERMINAL 7 of the blower SW flows to TERMINAL 10 to GROUND, causing the rear heater relay to turn ON. This causes the current to flow through the rear heater relay (Point Side) to TERMINAL 2 of the blower motor (Rear heater) to TERMINAL 1 to TERMINAL 4 of the rear relay to TERMINAL 2 to TERMINAL 4 of the blower resistor (Rear heater) to TERMINAL 3 to TERMINAL 4 of the rear M1 relay to TERMINAL 3 to TERMINAL 3 of the blower SW to TERMINAL 10 to GROUND. At this time, the blower resistance of the blower resistor (Rear heater) is smaller than at low speed, so the blower motor rotates at medium low speed.

When the blower SW is moved to M2 position, the current through the motor flows from TERMINAL 4 of the blower resistor (Rear heater) to TERMINAL 2 to TERMINAL 4 of the rear M2 relay to TERMINAL 3 to TERMINAL 2 of the blower SW to TERMINAL 10 to GROUND. At this time, resistance of the blower resistor (Rear heater) is smaller than at M1 position, so the blower motor rotates at medium high speed.

* High speed operation
When the blower SW is moved to HI position, the current to TERMINAL 7 of the blower SW flows to TERMINAL 10 to GROUND, causing the rear heater relay to turn ON. At this time, the current flows to TERMINAL 1 of the blower SW to TERMINAL 10 to GROUND, causes the rear HI relay to turn ON.

This causes the current to flow through the rear heater relay (Point Side) to TERMINAL 2 of the blower motor (Rear heater) to TERMINAL 1 to TERMINAL 4 of the rear relay to TERMINAL 2 to TERMINAL 2 of the rear HI relay to TERMINAL 1 to GROUND, rotating the blower motor at high speed.

2. Heater blower SW (Rear) operation
With the heater blower SW (Front) at REAR position, the current to TERMINAL 7 of the heater blower SW (Front) to flows TERMINAL 10 to GROUND, causing the rear heater relay to turn ON.

* Low speed operation
When the blower SW (Rear) is moved to LO position, the current flows through the rear heater relay (Point Side) to TERMINAL 2 of the blower motor (Rear heater) to TERMINAL 1 to TERMINAL 4 of the rear relay to TERMINAL 2 to TERMINAL 4 of the blower resistor (Rear heater) to TERMINAL 1 to TERMINAL 4 of the rear LO relay to TERMINAL 3 to TERMINAL 3 of the blower SW (Rear) to TERMINAL 1 to TERMINAL 5 of the blower SW (Front) to TERMINAL 10 to GROUND, rotating the blower motor at low speed.

* Medium speed operation (Operation at M1, M2)
When the blower SW (Rear) is moved to M1 position, the current flows through the rear heater relay (Point Side) to TERMINAL 2 of the blower motor (Rear heater) to TERMINAL 1 to TERMINAL 4 of the rear relay to TERMINAL 2 to TERMINAL 4 of the blower resistor (Rear heater) to TERMINAL 3 to TERMINAL 4 of the rear M1 relay to TERMINAL 3 to TERMINAL 4 of the blower SW (Rear) to TERMINAL 1 to TERMINAL 5 of the blower SW (Front) to TERMINAL 10 to GROUND. At this time, the blower resistance of the blower resistor (Rear heater) is smaller than at low speed, so the blower motor rotates at medium low speed.

When the blower SW (Rear) is moved to M2 position, the current through the motor flows from TERMINAL 4 of the blower resistor (Rear heater) to TERMINAL 2 to TERMINAL 4 of the rear M2 relay to TERMINAL 3 to TERMINAL 8 of the blower SW (Rear) to TERMINAL 1 to TERMINAL 5 of the blower SW (Front) to TERMINAL 10 to GROUND. At this time, resistance of the blower resistor (Rear heater) is smaller than at M1 position, so the blower motor rotates at medium high speed.

* High speed operation
When the blower SW is moved to HI position, the current flows to TERMINAL 5 of the blower SW (Rear) to TERMINAL 1 to TERMINAL 5 of the blower SW (Front) to TERMINAL 10 to GROUND, causes the rear HI relay to turn ON.
This causes the current flows through the rear heater relay (Point Side) to TERMINAL 2 of the blower motor (Rear heater) to TERMINAL 1 to TERMINAL 4 of the rear relay to TERMINAL 2 to TERMINAL 2 of the rear HI relay to TERMINAL 1 to GROUND, rotating the blower motor at high speed.

2. BLOWER MOTOR (REAR COOLING) OPERATION
Current is applied at all times through the RR A/C fuse to TERMINAL 1 of the rear heater relay.

When the ignition SW is turned ON, the current flows through HEATER fuse to TERMINAL 3 of the rear heater relay to TERMINAL 5 to TERMINAL 7 of the heater blower SW (Front) and rear HI relay (Coil side).

The current from the HEATER fuse flows through the rear LO relay, rear M1 relay, rear M2 relay and rear relay to TERMINAL 3 of the volume SW to TERMINAL 4 to GROUND, causing each relay to turn ON.

1. Heater blower SW (Front) operation
* Low speed operation
When the blower SW is moved to LO position, the current to TERMINAL 7 of the blower SW flows to TERMINAL 10 to GROUND, causing the rear heater relay to turn ON. This causes the current to flow through the rear heater relay (Point Side) to TERMINAL 1 of the blower motor (Rear cooling) to TERMINAL 2 to TERMINAL 1 of the rear relay to TERMINAL 2 to TERMINAL 4 of the blower resistor (Rear cooling) to TERMINAL 1 to TERMINAL 5 of the rear LO relay to TERMINAL 3 to TERMINAL 4 of the blower SW to TERMINAL 10 to GROUND, rotating the blower motor at low speed.

* Medium speed operation (Operation at M1, M2)
When the blower SW is moved to M1 position, the current to TERMINAL 7 of the blower SW flows to TERMINAL 10 to GROUND, causing the rear heater relay to turn ON. This causes the current to flow through the rear heater relay (Point Side) to TERMINAL 1 of the blower motor (Rear cooling) to TERMINAL 2 to TERMINAL 1 of the rear relay to TERMINAL 2 to TERMINAL 4 of the blower resistor (Rear cooling) to TERMINAL 3 to TERMINAL 5 of the rear M1 relay to TERMINAL 3 to TERMINAL 3 of the blower SW to TERMINAL 10 to GROUND. At this time the blower resistance of the blower resistor (Rear cooling) is smaller than at low speed, so the blower motor rotates at medium low speed.

When the blower SW is moved to M2 position, the current through the motor flows from TERMINAL 4 of the blower resistor (Rear cooling) to TERMINAL 2 to TERMINAL 5 to the rear M2 relay to TERMINAL 3 to TERMINAL 2 of the blower SW to TERMINAL 10 to GROUND. At this time, resistance of the blower resistor (Rear cooling) is smaller than at M1 position, so the blower motor rotates at medium high speed.

* High speed operation
When the blower SW is moved to HI position, the current to TERMINAL 7 of the blower SW flows to TERMINAL 10 to GROUND, causing the rear heater relay to turn ON. At this time, the current flows to TERMINAL 1 of the blower SW to TERMINAL 10 to GROUND, causes the rear HI relay to turn ON.

This causes the current to flow through the rear heater relay (Point Side) to TERMINAL 1 of the blower motor (Rear cooling) to TERMINAL 2 to TERMINAL 1 of the rear relay to TERMINAL 2 to TERMINAL 2 of the rear HI relay to TERMINAL 1 to GROUND, rotating the blower motor at high speed.

2. Heater blower SW (Rear) operation
With the heater blower SW (Front) at REAR position, the current to TERMINAL 7 of the heater blower SW (Front) to flows TERMINAL 10 to GROUND, causing the rear heater relay to turn ON.

* Low speed operation
When the blower SW (Rear) is moved to LO position, the current flows through the rear heater relay (Point Side) to TERMINAL 1 of the blower motor (Rear cooling) to TERMINAL 2 to TERMINAL 1 of the rear relay to TERMINAL 2 to TERMINAL 4 of the blower resistor (Rear cooling) to TERMINAL 1 to TERMINAL 5 of the rear LO relay to TERMINAL 3 to TERMINAL 3 of the blower SW (Rear) to TERMINAL 1 to TERMINAL 5 of the blower SW (Front) to TERMINAL 10 to GROUND, rotating the blower motor at low speed.

* Medium speed operation (Operation at M1, M2)
When the blower SW (Rear) is moved to M1 position, the current flows through the rear heater relay (Point Side) to TERMINAL 1 of the blower motor (Rear cooling) to TERMINAL 2 to TERMINAL 1 of the rear relay to TERMINAL 2 to TERMINAL 4 of the blower resistor (Rear cooling) to TERMINAL 3 to TERMINAL 5 of the rear M1 relay to TERMINAL 3 to TERMINAL 4 of the blower SW (Rear) to TERMINAL 1 to TERMINAL 5 of the blower SW (Front) to TERMINAL 10 to GROUND. At this time, the blower resistance of the blower resistor (Rear cooling) is smaller than at low speed. so the blower motor rotates at medium low speed.

When the blower SW (Rear) is moved to M2 position, the current through the motor flows from TERMINAL 4 of the blower resistor (Rear cooling) to TERMINAL 2 to TERMINAL 5 of the rear M2 relay to TERMINAL 3 to TERMINAL 8 of the blower SW (Rear) to TERMINAL 1 to TERMINAL 5 of the blower SW (Front) to TERMINAL 10 to GROUND. At this time, resistance of the blower resistor (Rear cooling) is smaller than at M1 position, so the blower motor rotates at medium high speed.

* High speed operation
When the blower SW (Rear) is moved to HI position, the current flows to TERMINAL 5 of the blower SW (Rear) to TERMINAL 1 to TERMINAL 5 of the blower SW (Front) to TERMINAL 10 to GROUND, causes the rear HI relay to turn ON.

This causes the current flows through the rear heater relay (Point Side) to TERMINAL 1 of the blower motor (Rear cooling) to TERMINAL 2 to TERMINAL 1 of the rear relay to TERMINAL 2 to TERMINAL 2 of the rear HI relay to TERMINAL 1 to GROUND, rotating the blower motor at high speed.