Jeep Grand Cherokee WK. Manual — part 1362
P1736-GEAR RATIO ERROR IN 2ND PRIME (CONTINUED)
9.
UD CLUTCH HYDRAULIC CIRCUIT
Remove Transmission Oil Pan and check for excessive debris.
Remove the Valve Body and air check the UD clutch hydraulic circuit (in the case) per the Service Information.
NOTE: The UD clutch passage contains a small bleed orifice, a small amount of air leakage is normal.
Were there any problems found, excessive debris and/or excessive air leakage in the UD clutch hydraulic
circuit?
Yes
>> Repair as necessary. Check the UD clutch piston seals and the dribbler assembly, reaction shaft sup-
port seal rings, and the flatness of the pump valve body and pump housing faces. Check main regulator
valve for sticking in the bore.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1.
No
>> Go To 10
10.
UD ACCUMULATOR PISTON
Check the UD bleed orifice, accumulator piston, and accumulator piston seal in the main valve body.
Were there any problems found?
Yes
>> Repair as necessary. Refer to the Service Information for proper repair procedures.
No
>> Replace the Transmission Solenoid/TRS Assembly per the Service Information.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1.
11.
EXCESSIVE DEBRIS
Remove the Transmission Oil Pan and check for excessive debris.
Remove the valve body and air check the 4C clutch hydraulic circuit per the Service Information.
NOTE: The 4C clutch passage contains a small bleed orifice, a small amount of air leakage is normal.
Were there any problems found, excessive debris, improperly assembled 4C clutch and/or excessive air
leakage in the 4C clutch hydraulic circuit?
Yes
>> Repair as necessary. Refer to the Service Information for proper repair procedures. Note: Check the 4C
piston seals and bleed orifice.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1.
No
>> Go To 12
12.
4C ACCUMULATOR
Check the 4C Accumulator piston for cracks or a cut seal.
Check for a cut or missing #7 or #5 check balls.
Check the Solenoid Switch Valve and its plugs for sticking in its bore or excessive wear.
Were there any problems found
Yes
>> Repair as necessary. Refer to the Service Information for proper repair procedures.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1.
No
>> Go To 13
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AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS
WK
P1736-GEAR RATIO ERROR IN 2ND PRIME (CONTINUED)
13.
CHECK FOR BROKEN REVERSE SUN GEAR WELD
Working through the windows in the bottom of the case, check for a broken Reverse Sun gear weld to the reaction
carrier as follows:
(1) Hold the Transmission Output Shaft by holding the Transmission Manual Lever in the park position.
(2) Rotate the Input Annulus gear and drive shell, (the drum that encloses the two rearmost carriers).
(3) Check to see if the reaction carrier (the frontmost carrier, whose outer shell is splined to the 4C clutch) is rotat-
ing faster than the drive shell is being turned.
Is the reaction carrier turning faster than the drive shell?
Yes
>> Replace the Transmission Solenoid/TRS Assembly per the Service Information.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1.
No
>> Replace the reaction carrier per the Service Information.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1.
14.
CHECK IF DTC RESET
Did the DTC P1736 reset during the road test?
Yes
>> Go To 15
No
>> Go To 16
15.
LIST OF POSSIBLE CAUSES
If any other DTC’s set during the road test, refer to the appropriate symptom in the Transmission category.
If no other DTC’s set during the road test, below is a list of possible causes, but not strictly limited to those:
Check for excessive debris in the Transmission Oil pan, plugged, cracked, or split Primary Transmission Oil Filter
and/or seal.
Check for cuts or missing #7 and #5 check balls in the main valve body.
Check the 4C and UD accumulator pistons and seals, UD bleed orifice, and the Solenoid Switch Valve and Plugs
in the main valve body.
Check the UD clutch piston seals, reaction shaft support seal rings, and the flatness of the pump valve body and
pump housing faces.
Check the 4C clutch piston seals, and bleed orifice.
Check the UD clutch piston seals, reaction shaft support seal rings, and dribbler assemblies, and the flatness of the
pump valve body and pump housing faces.
View repair
Repair
Repair as necessary. Refer to the Service Information for proper repair procedures.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1.
WK
AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS
21 - 259
P1736-GEAR RATIO ERROR IN 2ND PRIME (CONTINUED)
16.
INTERMITTENT DTC
The conditions necessary to set this DTC are not present at this time.
Use the EATX DTC EVENT DATA to help identify the conditions and/or possible causes that may have caused the
DTC to set.
Check for any Service Information Tune-ups or Technical Service Bulletins that may apply.
Where there any problems found?
Yes
>> Repair as necessary.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1.
No
>> Test Complete.
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AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS
WK
P1775-SOLENOID SWITCH VALVE LATCHED IN TCC POSITION
WK
AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS
21 - 261
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