Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

[RC4A-El] Transmission/Transaxle

TURBINE SENSOR INSPECTION [RC4A-EL]

Caution
^ Water or foreign material entering the connector can cause poor connections or corrosion. Be sure that water or foreign material do not enter the connector when disconnecting it.


Visual Inspection
1. Remove the turbine sensor.
2. Make sure that the turbine sensor is free of any metal shavings or particles.
^ If there is any malfunction, clean them off.
3. Install the turbine sensor.

Element inspection
1. Verify using an oscilloscope that the wave pattern for the turbine sensor signal that is input to TCM terminal 2G is the same as the reference wave pattern.
^ If the actual pattern of the turbine sensor signal is not the same as the reference pattern, inspect and repair the following items:








^ Connected terminals: 2G (+) and 2M (-)
^ Equipment setting: 5V/DIV (Y): 250 microseconds/DIV (X)
^ Measuring conditions: M range, 1st gear at 20 km/h (12 mph)





2. Verify the wave pattern of the turbine sensor signal again, and if the malfunction is not resolved, replace turbine sensor.