CR-V LX 2WD L4-1972cc 2.0L DOHC MFI (1998)
Transmission Shift Position Indicator Lamp: Description and Operation
How the Circuit Works
With the ignition switch in ON (II) or START (III), voltage is applied to the Art gear position indicator. The Art gear position switch provides a ground
for each position. As an input is grounded, its indicator light comes on. If you select R, for example, ground will be provided to the input of the Art gear
position indicator, and the R indicator will come on.
With the headlight switch in PARK or HEAD, voltage is applied to the RED/BLK wire terminal. This changes the indicator panel illumination from
fixed to controlled by the dash lights dimmer input through the RED wire.
When the powertrain control module (PCM) detects an abnormality in the automatic transmission control system, or when you request diagnostic trouble
codes through the service check connector, the PCM will make the D4 indicator ('97-'98 models) or the D indicator ('99 model) light blink.
For '99 model vehicles, when the OlD OFF switch is closed it sends a ground signal to the PCM. The PCM in turn, provides ground for the OlD OFF
indicator bulb inside the gauge assembly and turns on the indicator light.
