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Diagnostic Procedure

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DIAGNOSTIC TEST REFERENCE - P2704-INADEQUATE ELEMENT VOLUME 4C

TEST ACTION APPLICABILITY
1
NOTE: 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.
NOTE: Always perform diagnostics with a fully charged battery to avoid false symptoms.
With the DRBIII®, read the engine DTC's. Check and repair all engine DTC's prior to performing transmission symptom diagnostics.With the DRBIII®, read Transmission DTC's. Record all DTC's and 1 Trip Failures.
NOTE: Diagnose 1 Trip Failures as a fully matured DTC.
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Repair as necessary.Perform the Shift Lever Position Test. If the test does not pass, refer to Symptom test for P0706 CHECK SHIFTER SIGNAL .For Gear Ratio DTC's, check and record all CVI's.Most DTC's set on start up but some must be set by driving the vehicle such that all diagnostic monitors have run.
NOTE: Verify the flash level of the transmission controller. Some problems are corrected by software upgrades to the transmission controller.
NOTE: Check for applicable TSB's related to the problem.
Perform this procedure prior to Symptom diagnosis.ContinueGo To 2		 All
2
NOTE: Check the Transmission Fluid Level. If the Transmission Fluid is low, repair any Transmission Fluid leak as necessary and adjust the Transmission Fluid Level per the Service Information.
With the DRBIII®, record the 4C CL VOL INDEX.With the DRBIII®, erase DTC's.Perform at least 10 3-4 upshifts with the throttle between 10 and 54 degrees. The Transmission Temperature must be at least 43°C or 110 °F.With the DRBIII®, read the 4C CL VOL INDEX.Is the current 4C CL VOL INDEX below 10?Yes --> Go To 3No --> Go To 4		 All
3 If there are no possible causes remaining, view repair.
Repair
Repair the transmission as necessary. Refer to the Service Information for proper repair procedures for components related to the 4th clutch. A broken or weak return spring or a dislocated snap ring could cause this problem.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 .		 All
4 Perform eight learnable starts. A learnable start is defined as follows: Start engine.
From a standstill, accelerate lightly to 50 MPH, then brake lightly to a stop. Turn off engine.
With the DRBIII®, record the CL VOL INDEX (CVI) for all clutches.
With the DRBIII®, perform a BATTERY DISCONNECT.
With the DRBIII®, read the CVI's and compare them to the reading recorded before the BATTERY DISCONNECT.
Are any of the CVI's less than 5 or different than before the BATTERY DISCONNECT?
Yes --> Go To 5
No --> Test Complete.		 All
5 Using the schematics as a guide, inspect the wiring and connectors. Repair as necessary. Pay particular attention to all power and ground circuits.
If there are no possible causes remaining, view repair.
Repair
Replace the Transmission Control Module per the Service Information. WITH THE DRBIII® PERFORM QUICK LEARN 
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1 .		 All
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