Electrically Heated Rear Window and Door Mirrors

F��DElectrically Heated Rear Window And Door Mirrors:

WIRING DIAGRAM

Electrically Heated Rear Window And Door Mirrors: Component Location:

COMPONENT LOCATION VIEW

Electrically Heated Rear Window And Door Mirrors: Component ID:

COMPONENT ID

16 Rheostat, lighting for controls, on dashboard between the steering wheel and driver's door.
22A Fuse board behind the cover flap in the glove box.
47J Indicator lamp, electrically heated rear window, in the main instrument display panel.
113 Relay, electrically heated rear window, in the main fuse box behind the glove box.
115 Electrically heated rear window.
116 Switch, electrically heated rear window, on control panel for heating and ventilation.
126 Motor, electrically adjustable door mirror, driver's side, in door mirror.
127 Motor, electrically adjustable door mirror, passenger's side, in door mirror.
159 Distribution terminal (+15 circuit) in main fuse box behind the glove box.
207 Heating element in door mirr6rs.
216 ACC control module, in the centre of the dashboard.
230 Distribution terminal (+30 circuit) in main fuse box behind the glove box.
231 Distribution terminal (+54 circuit) in main fuse box behind the glove box.

1-Pin Connectors
H1-2 In the right-hand front door below the door mirror.
H1-3 In the left-hand front door below the door mirror.

2-Pin Connectors
H2-62 In the tailgate on the left.
H2-67 In the tailgate on the right-hand side.

4-Pin Connectors
H4-1 In the driver's door below the door mirror.
H4-2 In the passenger's door below the door mirror.

8-Pin Connector
H8-4 By the left-hand rear wheel housing.

22-Pin Connectors
H22-1 Behind the cable entry in the left- hand A pillar.
H22-2 Behind the cable entry in the right- hand A pillar.

Grounding Points
G4 Grounding point, in the tailgate, CS.
G5 Grounding point, under the rear seat on the left.
G6 Grounding point, negative distribution terminal, in main fuse box 22B behind the glove box.
G8 Grounding point, dashboard, by the left-hand front loudspeaker socket.
G26 Grounding point, right-hand C pillar (4D).

DESCRIPTION OF OPERATION
The electrically heated rear window and electrically heated door mirrors are switched on and off with a switch on the heating panel. In cars with ACC automatic climate control, activation is via the ACC unit. When the electrically heated rear window is activated, elements 207 in electrically heated door mirrors 126 and 127 are also supplied with current.

Current is supplied via fuse 18 to terminal 30 on time-delay relay 113. When the ignition switch is in the Drive position, current is also supplied via fuse 13 to terminal 15 on time-delay relay 113 and via fuse 9 to spring-loaded switch 116.

Instead of time-delay relay 113, cars with ACC are fitted with an ordinary relay which is controlled by the ACC unit.

When the switch is depressed, supply voltage is fed to relay terminal E, causing the relay to operate. Current from relay terminal 87 flows to electrically heated rear window 115, the electrically heated door mirrors and indicator lamp 47J and then to ground. The relay has a time delay function which maintains the connection for about 10 minutes, after which the circuit is broken.

If the ignition switch is turned to the Lock position while the electrically heated rear window is switched on, the circuit supplying current to the relay will be broken and the relay then breaks the supply of current to the electrically heated rear window, the pilot lamp and the electrically heated door mirrors.

FAULT DIAGNOSIS HINTS
The electrically heated rear window and door mirrors are activated by turning the ignition switch to the Drive position.
1. Check that fuses 9 and 18 are intact and supplied with current.
2. Check the voltage on relay 113.
3. Check the voltage on relay 113 while switch 116 is activated.
4. Activate relay 113 and check the electrically heated rear window connections and that the window heating element is supplied with current.
5. Check the connectors, wiring harness and ground connections.

If there is an open circuit in the diode on relay 113, the relay holding circuit will not operate.