Jeep Grand Cherokee WK. Manual — part 1303
U0141–LOST COMMUNICATION WITH FRONT CONTROL MODULE (CONTINUED)
For the Transmission circuit diagram (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - NAG1 - SCHE-
MATICS AND DIAGRAMS)
For a complete wiring diagramRefer to Section 8W
Theory of Operation
Some controllers communicate with other controllers over the CAN C bus. The FCM controller continuously monitors
the bus activity and receives the messages it needs. The CAN C bus is also used to communicate transmission MIL
status to the Engine Controller.
Refer to 8-ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING for diagnostic pro-
cedures and for further possible causes.
21 - 22
AUTOMATIC TRANSMISSION NAG1 - SHIFTER DIAGNOSTICS
WK
AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL
DIAGNOSTICS
TABLE OF CONTENTS
page
page
AUTOMATIC TRANSMISSION 545RFE -
ELECTRICAL DIAGNOSTICS
DIAGNOSIS AND TESTING
VERIFICATION TEST - VER 1 . . . . . . . . . . . . 25
P0218-HIGH TEMPERATURE OPERATION
ACTIVATED . . . . . . . . . . . . . . . . . . . . . . . . . . 33
P0602-CONTROL MODULE PROGRAMMING
ERROR/NOT PROGRAMMED . . . . . . . . . . . . 39
P0604-INTERNAL CONTROL MODULE RAM
P0605-INTERNAL CONTROL MODULE ROM
. . . . . . . . . . . . . . . . . 42
P0706-TRANSMISSION RANGE SENSOR
RATIONALITY . . . . . . . . . . . . . . . . . . . . . . . . 43
P0711-TRANSMISSION TEMPERATURE
SENSOR PERFORMANCE . . . . . . . . . . . . . . . 47
P0712-TRANSMISSION TEMPERATURE
SENSOR LOW . . . . . . . . . . . . . . . . . . . . . . . . 50
P0713-TRANSMISSION TEMPERATURE
SENSOR HIGH . . . . . . . . . . . . . . . . . . . . . . . 54
P0714-TRANSMISSION TEMPERATURE
SENSOR INTERMITTENT . . . . . . . . . . . . . . . 58
P0715-INPUT SPEED SENSOR 1 CIRCUIT
P0720-OUTPUT SPEED SENSOR CIRCUIT
P0725-ENGINE SPEED SENSOR CIRCUIT
P0736-GEAR RATIO ERROR IN REVERSE
RATIONALITY . . . . . . . . . . . . . . . . . . . . . . . 124
P0845-2C HYDRAULIC PRESSURE TEST
RATIONALITY . . . . . . . . . . . . . . . . . . . . . . . 140
P0870-OD HYDRAULIC PRESSURE TEST
RATIONALITY . . . . . . . . . . . . . . . . . . . . . . . 168
P0875-UD HYDRAULIC PRESSURE TEST
RATIONALITY . . . . . . . . . . . . . . . . . . . . . . . 185
P0888-TRANSMISSION RELAY ALWAYS OFF
P0891-TRANSMISSION RELAY ALWAYS ON
P0932-LINE PRESSURE SENSOR CIRCUIT
P0934-LINE PRESSURE SENSOR CIRCUIT
LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
P0935-LINE PRESSURE SENSOR CIRCUIT
HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219
P0944-LOSS OF HYDRAULIC PUMP PRIME
P0987-4C HYDRAULIC PRESSURE TEST
RATIONALITY . . . . . . . . . . . . . . . . . . . . . . . 244
P1684-BATTERY WAS DISCONNECTED
P1715-RESTRICTED MANUAL VALVE IN T3
RANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253
P1736-GEAR RATIO ERROR IN 2ND PRIME
LATCHED IN TCC POSITION . . . . . . . . . . . . 261
LATCHED IN LR POSITION . . . . . . . . . . . . . 265
P1790-FAULT IMMEDIATELY AFTER SHIFT
P1794-SPEED SENSOR GROUND ERROR
P2700-INADEQUATE ELEMENT VOLUME LR
P2701-INADEQUATE ELEMENT VOLUME 2C
P2702-INADEQUATE ELEMENT VOLUME
OD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280
P2703- INADEQUATE ELEMENT VOLUME
UD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282
P2704-INADEQUATE ELEMENT VOLUME 4C
U0002 CAN C BUS OFF PERFORMANCE
U0100–NO COMMUNICATION WITH THE
ECM/PCM . . . . . . . . . . . . . . . . . . . . . . . . . . 292
U0121–LOST COMMUNICATION WITH ABS
U0141 LOST COMMUNICATION WITH FCM
WK
AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS
21 - 23
AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS
DIAGNOSIS AND TESTING
21 - 24
AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS
WK
45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1
For the Transmission circuit diagram (Refer to )(Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 45RFE/
545RFE - SCHEMATICS AND DIAGRAMS).
For a complete wiring diagram Refer to Section 8W.
45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1
1.
45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1
1. After completion of the Transmission Verification Test, the Powertrain Verification Test must be per-
formed.
2. Connect the scan tool to the Data Link Connector (DLC).
3. Reconnect any disconnected components.
4. If the PCM has been replaced or reflashed, or the transmission has been repaired or replaced, it is nec-
essary to perform the scan tool Quick Learn Procedure.
5. With the scan tool, erase all Transmission and Engine DTC’s.
6. With the scan tool, display Transmission Temperature. Start and run the engine until the Transmission Temper-
ature is HOT.
7. Check the Transmission fluid level and adjust if necessary. Refer to the Service Information for the Fluid Fill
procedure. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE/FLUID - STANDARD PRO-
CEDURE)
8. Road test the vehicle.
9. Perform the following shifts from a standing start with a constant throttle opening of 20 to 25 degrees to the
speeds of 97 Km/h or 60 MPH; make fifteen to twenty 1 to 2, 2 to 3, 3 to 4 upshifts and for 545RFE, 4 to 5.
10. Perform the following shifts with speeds below 40 Km/h or 25 MPH; make five to eight wide open throttle kick-
downs to 1st gear. Allow at least 5 seconds each in 2nd and 3rd gear between each kickdown.
11. Check for DTC’s during the road test.
12. Use the EATX OBDII task manager to run Good Trip time in each gear, this will confirm the repair and to
ensure that the DTC has not re-matured.
13. With the scan tool, perform a BATTERY DISCONNECT, this will clear the EATX DTC EVENT DATA
Were there any Diagnostic Trouble Codes (DTCs) set during the road test?
Yes
>> Refer to the Symptom List for the appropriate diagnostic tests.
No
>> Repair is complete.
WK
AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS
21 - 25
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст