CL L4-2156cc 2.2L SOHC F22B1 MFI (1997)
Transmission Shift Position Indicator Lamp: Description and Operation
With the ignition switch in ON (II) or START (III), voltage is applied to the A/T gear position indicator. The A/T 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 applied to the input of the A/T 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 or Transmission Control Module (PCM or TCM) detects an abnormality in the automatic transmission control system, or when
you request diagnostic trouble codes through the service check connector, the PCM or TCM will make the D4 indicator light blink.
