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P2702-INADEQUATE ELEMENT VOLUME OD
For a complete wiring diagramRefer to Section 8W.
When Monitored:
Whenever the engine is running. The OD clutch volume index (CVI) is updatedduring a 2-3 upshift with throt-
tle angle between 10 and 54 degrees. Transmission temperature must be at least 43° C (110° F).
Set Condition:
When the OD CVI falls below 5.
Possible Causes
HYDRAULIC LEAK IN THE VALVE BODY
BROKEN OD ACCUMULATOR SPRING
BROKEN OD/REV PISTON BELLEVILLE SPRING OR DISLODGED SNAP RING
INTERNAL LEAKAGE IN PUMP ASSEMBLY
TRANSMISSION SOLENOID/TRS ASSEMBLY
POWERTRAIN CONTROL MODULE
Always perform the 45RFE/545RFE Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to
21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
Theory of Operation
The volumes of the transmission fluid needed to apply the friction elements are continuously monitored and learned
for adaptive controls. As the clutch friction material wears, the volume of fluid needed to apply the clutch increases.
Certain transmission mechanical problems can cause near-zero learned volumes resulting in setting a DTC. The
DTC will usually set with other DTC’s, which indicates an internal transmission problem.
Diagnostic Test
1.OTHER DTCS PRESENT
With the scan tool, check for other transmission DTCs.
Are there any Pressure Switch Sense circuit DTCs present also?
Ye s>>
Refer to the Transmission category and perform the appropriate symptom.
No>>
Go To 2
2.CHECK THE OD CLUTCH VOLUME INDEX
With the scan tool, erase DTCs.
NOTE: The TRANS TEMP DEG must be at least 43° C or 110° F before performing thefollowing steps.
Drive the vehicle and perform at least ten 2-3 upshifts with the TPS degree between 10 and 54.
With the scan tool, read the OD CL VOL INDEX.
Is the OD CL VOL INDEX below 10?
Ye s>>
Go To 3
No>>
Go To 5
Page 3345 of 5267

P2703- INADEQUATE ELEMENT VOLUME UD
For a complete wiring diagramRefer to Section 8W.
When Monitored:
Whenever the engine is running. The UD clutch volume index (CVI) is updatedduring a 4-3 kickdown with
throttle angle between 10 and 54 degrees. Transmission temperature must be at least 43° C (110° F).
Set Condition:
When the UD CVI falls below 11.
Possible Causes
BROKEN UD ACCUMULATOR SPRING(S)
BROKEN UD CLUTCH PISTON SPRING OR DISLODGED SNAP RING
INTERNAL LEAKAGE IN PUMP OR VALVE BODY ASSEMBLIES
TRANSMISSION SOLENOID/TRS ASSEMBLY
POWERTRAIN CONTROL MODULE
Always perform the 45RFE/545RFE Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to
21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
Theory of Operation
The volumes of the transmission fluid needed to apply the friction elements are continuously monitored and learned
for adaptive controls. As the clutch friction material wears, the volume of fluid needed to apply the clutch increases.
Certain transmission mechanical problems can cause near-zero learned volumes resulting in setting a DTC. The
DTC will usually set with other DTC’s, which indicates an internal transmission problem.
Diagnostic Test
1.OTHER DTCS PRESENT
With the scan tool, check for other transmission DTCs.
Are there any Pressure Switch Sense circuit DTCs present also?
Ye s>>
Refer to the Transmission category and perform the appropriate symptom.
No>>
Go To 2
2.CHECK UD CLUTCH VOLUME INDEX
With the scan tool, erase Transmission DTCs.
NOTE: The TRANS TEMP DEG must be at least 43° C or 110° F before performing thefollowing steps.
Drive the vehicle and perform at least ten 4-3 kickdowns by depressing the throttle between 30 and 54 TPS degrees
at speeds about 80 Kmh or 50 MPH.
With the scan tool, read the UD clutch volume index (CVI).
Is the UD CVI below 10?
Ye s>>
Go To 3
No>>
Go To 5
Page 3347 of 5267

P2704-INADEQUATE ELEMENT VOLUME 4C
For a complete wiring diagramRefer to Section 8W.
When Monitored:
Whenever the engine is running. The 4C clutch volume index (CVI) is updatedduring a 3-4 upshift with throttle
angle between 10 and 54 degrees. Transmission temperature must be at least43° C (110° F).
Set Condition:
When the 4C CVI falls below 5.
Possible Causes
BROKEN 4C RETURN SPRING OR DISLODGED SNAP RING
BROKEN 4C ACCUMULATOR SPRING(S)
HYDRAULIC LEAK IN THE VALVE BODY
TRANSMISSION SOLENOID/TRS ASSEMBLY
POWERTRAIN CONTROL MODULE
Always perform the 45RFE/545RFE Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to
21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
Theory of Operation
The volumes of the transmission fluid needed to apply the friction elements are continuously monitored and learned
for adaptive controls. As the clutch friction material wears, the volume of fluid needed to apply the clutch increases.
Certain transmission mechanical problems can cause near-zero learned volumes resulting in setting a DTC. The
DTC will usually set with other DTC’s, which indicates an internal transmission problem.
Diagnostic Test
1.CHECK THE 4C CLUTCH VOLUME
With the scan tool, record the 4C clutch volume index (CVI) and 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 scan tool, read the 4C CVI.
Is the current 4C CVI below 10?
Ye s>>
Go To 2
No>>
Go To 5
2.DTC P0876 PRESENT
With the scan tool, read DTCs.
NOTE: The DTC P0876 must also be set with P2704 in order for this test to be valid.
Is the DTC P0876 also present?
Ye s>>
Replace the Transmission Solenoid/TRS Assembly per the Service Information.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
No>>
Go To 3
Page 3349 of 5267
P2706-MS SOLENOID CIRCUIT
For a complete wiring diagramRefer to Section 8W.
Page 3353 of 5267
U0002-CAN C BUS OFF PERFORMANCE
For a complete wiring diagramRefer to Section 8W.
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U0100-NO COMMUNICATION WITH THE ECM/PCM
For a complete wiring diagramRefer to Section 8W.
Page 3357 of 5267
U0121-LOST COMMUNICATION WITH ABS
For a complete wiring diagramRefer to Section 8W.
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U0141 LOST COMMUNICATION WITH FCM
For a complete wiring diagramRefer to Section 8W.