TEST
ACTION
APPLICABILITY
3
Check the transmission fluid level per the service instructions.
The transmission must be at operating temperature prior to checking fluid level.
Adjusting fluid level on a cold transmission will result in an overfilled transmission.
Note: The transmission must be hot when checking oil level. When the
temperature is below 10 degrees C (50 degrees F). it is possible that no oil
will show on the dipstick, even though the transmission has an adequate fill
level when warm.
Is the fluid level OK?
45RFE AUTO
TRANS
Yes
→
Go To
4
No
→
Low fluid level can be the cause of many transmission problems.
If the fluid level is low locate and repair the leak then check and
adjust the fluid level per the service information.
Perform 45RFE TRANSMISSION VERIFICATION TEST - VER
1.
4
If there are no possible causes remaining, view repair.
45RFE AUTO
TRANS
Repair
Repair internal transmission problem as required. If the trans-
mission is to be repaired,pay special attention to the mechanical
components related to the Overdrive clutch. A deteriorated return
spring or a dislocated snap ring could cause this problem.
Perform 45RFE TRANSMISSION VERIFICATION TEST - VER
1.
5
Perform eight learnable starts. A learnable start is defined as follows: Start engine.
From a standstill, accelerate lightly to 80 Km/h 50 MPH, then brake lightly to a stop.
Turn off engine.
With the DRBIII
t, observe and record CVI’s.
With the DRBIII
t, perform a battery disconnect.
With the DRBIII
t, observe and record CVI’s.
Are any of the CVI’s less than 5 or are they different than before the battery
disconnect?
45RFE AUTO
TRANS
Yes
→
Go To
6
No
→
Test Complete.
6
If there are no possible causes remaining, view repair.
45RFE AUTO
TRANS
Repair
Replace the TCM. WITH THE DRBIII
t PERFORM QUICK
LEARN.
Perform 45RFE TRANSMISSION VERIFICATION TEST - VER
1.
167
TRANSMISSION
P1772-INADEQUATE ELEMENT VOLUME OD —
Continued