Warnings and indicators – circuit operation

WARNINGS AND INDICATORS – CIRCUIT OPERATION

ABS Warning Light

The ABS warning light receives battery voltage with the Ignition Switch (X134) in position II. It is grounded by the Anti-Lock Brake System ECU (Z108) or the ABS Warning Relay (K103) in the event of an ABS problem.

Catalyst Warning Indicator (Japan Vehicles Only)

In case of a catalyst overheat, the catalyst overheat sensors send a signal to the Catalyst Warning ECU (Z274) which then provides battery voltage to the Catalyst Warning Relay (K172). The relay is energised and provides ground to the Catalyst Warning Indicator. The Catalyst Warning Indicator is also grounded by a 3 second timer as a bulb check. NOTE: All Catalyst Warning Indicator circuitry is provided for Gulf States vehicles, but the bulb is not fitted.

Engine Immobilised Warning Lamp (EIWL) (Except Japan and Gulf States Vehicles Only)

  " &# $$"( & $ ' $ $  $ ' $  ! # $  $ # " %  ( $ $ "  $  $  $ $  '    $ # Flashing = Immobilised
Continuous = Immobilised (Cirrus Fail)

Theft Alarm LED (Except Japan and Gulf States Vehicles Only)

The Theft Alarm LED receives battery voltage at all times. It is grounded by the Theft Alarm Unit (Z163) to indicate the following conditions: Slow Flash = Immobilised or Immobilised and
armed Rapid Flash = Perimetrically and Volumetrically
armed Intermittent Rapid Flash = Perimetrically armed
No Flash for 10 Seconds = Mislock
Continuous = Driver’s door open (or ignition on)
and Immobilised

Transmission/Transfer Box Oil Temperature Warning Light

The transmission/transfer box oil temperature warning light is grounded by the Automatic Transmission Oil Temperature Switch (X108) when the temperature of the transmission fluid exceeds 130 ° C (266 ° F). The warning light is also grounded by the Transfer Box Oil Temperature Switch (X174) when the temperature of the transfer box fluid exceeds 145 ° C (266 ° F). On Australian vehicles the warning light is grounded by a 3 second timer as a bulb check.

Low Fuel Warning Indicator

When the fuel gauge sender’s resistance falls below approximately 25 Ohms (6 liters/1.5 US gallons), the Low Fuel Warning Indicator will illuminate to warn the driver.

Charge Warning Light

The charge warning light receives battery voltage with the Ignition Switch (X134) in position II. This warning light is grounded by the Generator (Z106) if the Generator is not producing normal power output or the Generator stops turning.

SRS Indicators

The SRS Indicators are controlled by the Air Bag Diagnostic Control Module (Z151) and the SRS Indicator Control Circuit of the Instrument Cluster (Z142) to indicate SRS System faults.