AUTOMATIC TRANSMISSION ± Troubleshooting <A/T>
23-5
DIAGNOSIS FUNCTION
N RANGE LAMP
The N range lamp flashes at a frequency of approximately
1 Hz if there is an abnormality in any of the items in the
table below which are related to the A/T system. Check the
diagnosis code output if the N range lamp is flashing at a
frequency of approximately 1 Hz.
N range lamp flashing items
Input shaft speed sensor
Output shaft speed sensor
Each solenoid valve
Caution
If the N range lamp is flashing at a frequency of
approximately 2 Hz (faster than at 1 Hz), it means that
the A/T fluid temperature is too high. Stop the vehicle
in a safe place and wait until the N range lamp switches
off.
METHOD OF READING THE DIAGNOSIS CODE
Use the MUT-II or the N range lamp to take a reading of
the diagnosis codes. (Refer to GROUP 00 ± How to Use
Troubleshooting/Inspection Service Points.)
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