The indicators are controlled via the LH steering column switch and operate when the ignition switch is in position II.
The hazard warning lamp switch is mounted on the centre fascia module. When the switch is pressed, the LH and RH indicator lamps, the switch, and the instrument pack mounted warning lamp all flash simultaneously.
Hazard warning lamp operation is not dependent on ignition switch position.
Operation
Power Distribution
Feed from the positive battery terminal (C0192) is supplied to fusible link 1 and fusible link 5 of the under seat fuse box (C0632) on an N wire. Fusible link 1 is connected in series with fusible link 2, which is also located in the under seat fuse box. Fusible link 2 (C0570) is connected to fuse 31 of the passenger compartment fuse box (C0595) by an NK wire. Fuse 31 (C0595) provides a constant battery feed to the hazard warning switch (C0096) on a PN wire.
Fusible link 5 (C0570) is connected to the ignition switch (C1043 on LHD, C0028 on RHD) by an NW wire. When the ignition switch is turned to the 'ignition' position, current flows across the switch (C1732 on LHD, C0094 on RHD) to fuse 21 of the passenger compartment fuse box (C0581) on an NW wire.
Fuse 21 (C0581) provides an ignition feed to the hazard warning switch (C0096) on a WG wire. The hazard warning switch (C0096) is now able to provide a feed to the hazard warning relay coil and switch (C0547) on a LG wire. The relay coil is earthed on a B wire. The energised hazard warning relay (C0547) provides a feed to the column switch (C1739 on LHD, C1042 on RHD) on a LGN wire.
Indicator Lamps
LH Turn
When the column switch is moved to the LH position, current flows across the switch (C1739 on LHD, C1042 on RHD) to the following on GR wires:
- The LH front direction indicator lamp (C0001)
- The LH front side repeater lamp (C0013)
- The LH rear direction indicator lamp (C0928 on 90 and 100 vehicles, C1745 on 130 vehicles)
- The trailer socket (C0499)
- The LH indicator warning lamp located in the instrument pack (C0233).
All except the trailer socket are earthed on B wires. The flashing sequence of the lamps is controlled by circuitry contained within the hazard warning switch.
RH Turn
When the column switch is moved to the RH position, current flows across the switch (C1739 on LHD, C1042 on RHD) to the following on GW wires:
- The RH front direction indicator lamp (C0002)
- The RH front side repeater lamp (C0013)
- The RH rear direction indicator lamp (C0837 on 90 and 110 vehicles, C1758 on 130 vehicles)
- The trailer socket (C0499)
- The RH indicator warning lamp located in the instrument pack (C0233).
All except the trailer socket are earthed on B wires. The flashing sequence of the lamps is controlled by circuitry contained within the hazard warning switch.
Trailer Socket
When a left or right hand turn is selected, the hazard warning relay (C0547) also provides a feed to the trailer warning lamp located in the instrument pack (C0236) on an LGP wire. The trailer warning lamp will flash once, then extinguish. The lamp is earthed on a B wire.
Hazard Warning Lamps
When the hazard warning switch is pressed, current flows across the switch (C0096) to the hazard warning relay (C0547) on a LG wire. The energised hazard warning relay (C0547) provides a feed back to the hazard warning switch (C0096) on an LGN wire. The hazard warning switch (C0096) is now able to provide a feed to both the LH and RH direction indicator circuits simultaneously as follows:
- To the LH front direction indicator lamp (C0001) on a GR wire
- To the LH front side repeater lamp (C0013) on a GR wire
- To the LH rear direction indicator lamp (C0928 on 90 and 110 vehicles, C1745 on 130 vehicles) on a GR wire
- To the trailer socket (C0499) on a GR wire
- To the LH indicator warning lamp located in the instrument pack (C0233) on a GR wire
- To the RH front direction indicator lamp (C0002) on a GW wire
- To the RH front side repeater lamp (C0013) on a GW wire
- To the RH rear direction indicator lamp (C0837 on 90 and 110 vehicles, C1758 on 130 vehicles) on a GW wire
- To the trailer socket (C0499) on a GW wire
- To the RH indicator warning lamp located in the instrument pack (C0233) on a GW
- To the hazard warning lamp located in the instrument pack (C0233) on a BR wire.
All except the trailer socket are earthed on B wires. The flashing sequence of the lamps is controlled by circuitry contained within the hazard warning switch.
Anti-theft Alarm ECU
When the vehicle alarm system is armed, the anti-theft alarm ECU flashes the hazard warning lamps three times. To do this, the anti-theft alarm ECU (C1980 on LHD, C0057 on RHD) provides a pulsed feed to both the LH and RH direction indicator lamp circuits on a GR and GW wire respectively.