XJ-6L (X300) L6-4.0L (AJ16) (1997)
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Turn Signal Indicator: Description and Operation
The operation of the direction indicator 'tell-tales' is controlled by the Body Processor Unit (BPU). The 'tell-tales' are the only indicators on the
instrument pack which can be illuminated with the ignition OFF, for hazard warning.
The signal from the BPU to the instrument pack is pulsed, switching the direction indicators on and off at the correct frequency. The 'tell-tales' will
illuminate when the signal is low. If the frequency doubles, this signifies that an exterior direction indicator bulb has failed; the bulb failure warning lamp
should also be illuminated.
The signal is fed to two separate inputs to the instrument pack, on the 48-way connector; pin 40 for LH directional indicator 'tell-tale' and pin 41 for RH.
NOTE: If both direction indicator 'tell-tales' are permanently illuminated; this indicates that the BPU has not been PECUS programmed. Check that a
PECUS label is attached to the BPU.
