5.CHECK THE (T16) TRANSMISSION CONTROL OUTPUT CIRCUIT
Turn the ignition off to the lock position.
Disconnect the Transmission Solenoid/TRS Assembly harness connec-
tor.
Ignition on, engine not running.
With the scan tool in TIPM, actuate the TCM output.
Using a 12-volt test light connected to ground, check all (T16) Trans-
mission Control Output circuits at the Transmission Solenoid/TRS
Assembly harness connector and the appropriate terminals of Miller tool
#8815.
NOTE: The (T16) Transmission Control Output circuit branches off
to both Transmission Solenoid/TRS Assembly and the PCM.
Does the test light illuminate brightly while cycling on and off
on all (T16) Transmission Control Output circuits?
Ye s>>
Go To 6
No>>
Repair the (T16) Transmission Control Output circuit for an
open or high resistance.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION
TEST - VER 1. (Refer to 21 - TRANSMISSION/TRANS-
AXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PRO-
CEDURE)
6.CHECK THE (T16) TRANSMISSION CONTROL OUTPUT CIRCUIT FOR AN OPEN
Turn the ignition off to the lock position.
Disconnect the TIPM C10 harness connector.
Measure the resistance of the (T16) Transmission Control Output circuit
between the TIPM C10 harness connector and both the Transmission
Solenoid/TRS Assembly harness connector and the appropriate termi-
nals of Miller tool #8815.
Is the resistance above 5.0 ohms on any circuit?
Ye s>>
Repair the (T16) Transmission Control Output circuit for an
open or high resistance.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION
TEST - VER 1. (Refer to 21 - TRANSMISSION/TRANS-
AXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PRO-
CEDURE)
No>>
Using the schematics as a guide, check the Powertrain
Control Module (PCM) terminals for corrosion, damage, or
terminal push out. Pay particular attention to all power and
ground circuits. If no problems are found, replace the PCM
per the Service Information.With the scan tool, perform
QUICK LEARN.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION
TEST - VER 1. (Refer to 21 - TRANSMISSION/TRANS-
AXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PRO-
CEDURE)
P0604-INTERNAL CONTROL MODULE RAM
For a complete wiring diagramRefer to Section 8W.
Theory of Operation
After the controller is reset (ignition turned to the RUN position), the microprocessor checks the integrity of each
RAM location by writing to it and reading back from it. The read value shouldbe same as value written.
When Monitored:
One time after the controller is reset (ignition turned to the RUN position).
Set Condition:
Whenever the Powertrain Control Module (PCM) detects an internal controller problem.
Possible Causes
POWERORGROUNDCIRCUIT
POWERTRAIN CONTROL MODULE
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 - TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
Diagnostic Test
1.CHECK WIRING AND CONNECTORS FOR INTERMITTENT OPERATION
Using the schematics as a guide, check the Powertrain Control Module (PCM)terminals for corrosion, damage, or
terminal push out. Pay particular attention to all power and ground circuits.
NOTE: Due to the integration of the Powertrain and Transmission Control Modules, the transmission part of
the PCM has it’s own specific power and ground circuits.
Wiggle the wires while checking for shorted and open circuits.
Check for any Service Bulletins that may apply.
Were there any problems found?
Ye s>>
Repair the power and/or ground circuits to the PCM and Transmission Control Relay as necessary.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
No>>
Replace the PCM per the Service Information. With the scan tool, perform QUICK LEARN.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
P0605-INTERNAL CONTROL MODULE ROM
For a complete wiring diagramRefer to Section 8W.
Theory of Operation
After the controller is reset (ignition turned to the RUN position) the microprocessor checks the integrity of the pro-
gram memory (ROM). A checksum is calculated by adding all used bytes in the program memory. The sum should
be the same as a known constant stored in the program memory.
When Monitored:
One time after the controller is reset (ignition turned to the RUN position).
Set Condition:
Whenever the Powertrain Control Module (PCM) detects an internal controller problem.
Possible Causes
POWERORGROUNDCIRCUIT
POWERTRAIN CONTROL MODULE
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 - TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
Diagnostic Test
1.CHECK WIRING AND CONNECTORS FOR INTERMITTENT OPERATION
Using the schematics as a guide, check the Powertrain Control Module (PCM)terminals for corrosion, damage, or
terminal push out. Pay particular attention to all power and ground circuits.
NOTE: Due to the integration of the Powertrain and Transmission Control Modules, the transmission part of
the PCM has it’s own specific power and ground circuits.
Wiggle the wires while checking for shorted and open circuits.
Check for any Service Bulletins that may apply.
Were there any problems found?
Ye s>>
Repair the power and/or ground circuits as necessary.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
No>>
Replace the PCM per the Service Information. With the scan tool, perform QUICK LEARN.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
P0613-INTERNAL TCM
For a complete wiring diagramRefer to Section 8W.
Theory of Operation
The internal Watchdog (WD) is a separate hardware circuit that continuously monitors the microprocessor. To insure
the proper operation of the Transmission controller the watchdog must receive a signal from the microprocessor
within a specific time window (14 msec ± 1 msec) to prevent a system shutdownafter a short delay (570 msec).
The microprocessor periodically tests the WD’s ability to provide this shutdown function using a three phase test;
1) Send the signal too late > 15 msec
2) Send the signal too early < 13 msec
3) Delay test < 590 msec
If the watchdog input signal arrives too early or too late, the Watchdog Fault line will go low and the watchdog delay
will start to time out. The delay will be reset by the correct timing of watchdog signal sent during subsequent oper-
ations.
The Delay Test checks the delay time out. The Delay Monitor line is pulled low, which forces the delay to start timing
out. At the end of the delay time the Transmission Relay will be turned off. The delay test, upon detection of the
relay turning off, will immediately turn the relay back on before shutdowncan occur.
When Monitored:
1) One time after the controller is reset (ignition turned to the RUN position) and every 60 seconds thereafter.
The Delay Test is executed after a reset only.
2) 2 seconds after an invalid test.
Set Condition:
If either of the following conditions occur 3 times:
1) The watchdog fault line remains high after the period has elapsed for thetoo early - too late watchdog test.
2) The Transmission Control Relay remains on after the watchdog delay expired.
Possible Causes
POWERORGROUNDCIRCUIT
POWERTRAIN CONTROL MODULE
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 - TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
Diagnostic Test
1.CHECK THE WIRING AND CONNECTORS
Using the schematics as a guide, check the Powertrain Control Module (PCM)terminals for corrosion, damage, or
terminal push out. Pay particular attention to all power and ground circuits.
NOTE: Due to the integration of the Powertrain and Transmission Control Modules, the transmission part of
the PCM has it’s own specific power and ground circuits.
Wiggle the wires while checking for shorted and open circuits.
Check for any Service Bulletins that may apply.
Were there any problems found?
Ye s>>
Repair the power and/or ground circuits as necessary.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
No>>
Replace the PCM per the Service Information. With the scan tool, perform QUICK LEARN.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
When Monitored:
Continuously with the ignition on.
Set Condition:
The DTC will set if the controller detects an invalid PRNDL code which lastsfor more than 0.042 seconds.
Possible Causes
SHIFTER OUT OF ADJUSTMENT
TRS SENSE CIRCUIT OPEN
TRS SENSE CIRCUIT SHORT TO GROUND
TRS SENSE CIRCUIT SHORT TO VOLTAGE
METAL DEBRIS IN OIL PAN
TRANSMISSION RANGE SENSOR
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 T1, T2, T3, T41, or T42 (C1 - C5) Sense circuits communicate the shift lever position to the Transmission
Control System. Each circuit is terminated at the transmission by a switch(TRS). Each switch can be either open
or closed, depending on the shift lever position. The PCM can decode this information and determine the shift lever
position.
Each shift lever position has it own unique combination of closed and open switches. This is called a PRNDL code.
There are 5 switches, therefore: there are many possible combinations of open and closed switches (codes). There
are 12 valid codes: two for neutral, one for each other gear position (5), and five temporary (transition zone) codes.
The remainder of the codes should never occur, these are called invalid codes.
Diagnostic Test
1.CHECK TO SEE IF P0706 DTC IS CURRENT
With the scan tool, perform the Shift Lever Position Test.
Select the test outcome from the following:
Test passes:
Go To 6
Test fails with Error Code:
Go To 2
Test fails without Error Code:
Perform the Gearshift Adjustment Procedure per the Service Information.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
2.CHECK THE TRANSMISSION SOLENOID/TRS ASSEMBLY
Turn the ignition off to the lock position.
Remove the Ignition Switch Feed fuse from the TIPM.
CAUTION: Removal of the Ignition Switch Feed fuse from the TIPM will prevent the vehicle from being
startedingear.
WARNING: The Ignition Switch Feed fuse must be removed from the TIPM. Failure to do so can result in
personal injury or death.
Install Transmission Simulator, Miller tool #8333.
Ignition on, engine not running.
With the scan tool, perform the Shift Lever Position Test.
When the scan tool instructs you to put the Gear Selector in a particular position, you must do so using the selector
switch on the Transmission Simulator.
The LED for the gear position in question must be illuminated on the Transmission Simulator prior to pressing
ENTERon the scan tool.
NOTE: When the scan tool requests the O/D off button be depressed, you must use the O/D OFF button in
the vehicle or you will fail the Shift Lever Position Test with an error code11 or OD-TOW/HALL STUCK
OPEN.
NOTE: If the Shift Lever Position test fails, make sure to note the identification of the TRS Sense circuit for
future reference.
Did the Shift Lever Position test pass?
Ye s>>
Remove the Oil Pan and Main Valve Body Assembly per the Service Information. Check for metal debris
on top of the Solenoid/TRS Assembly and the manual valve code plate. If debris is present, determine
the cause of the debris and repair the transmission as necessary. If no problems are found, 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
3.TRS SENSE CIRCUIT OPEN
Turn the ignition off to the lock position.
Disconnect the Transmission Simulator, Miller tool #8333.
Disconnect the PCM harness connectors and install Miller tool #8815.
CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage
the PCM terminals resulting in poor terminal to pin connection. Install Miller tool #8815 to perform diagno-
sis.
Measure the resistance of the identified (T1, T2, T3, T41, or T42) TRS Sensecircuit, from the Transmission Sole-
noid/TRS Assembly harness connector to the appropriate terminal of Miller tool #8815.
Is the resistance above 5.0 ohms?
Ye s>>
Repair the identified (T1, T2, T3, T41, or T42) TRS Sense circuit for an open.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1.
No>>
Go To 4
4.TRS SENSE CIRCUIT SHORT TO GROUND
Measure the resistance between ground and the identified (T1, T2, T3, T41,or T42) TRS Sense circuit.
Is the resistance below 5.0 ohms?
Ye s>>
Repair the identified (T1, T2, T3, T41,orT42)TRSSensecircuitforashortto ground.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
No>>
Go To 5
5.TRS SENSE CIRCUIT SHORT TO OTHER CIRCUITS
Measure the resistance between the identified (T1, T2, T3, T41, or T42) TRSSense circuit and all other circuits in
the Transmission Solenoid/TRS Assembly harness connector.
Is the resistance below 100k ohms between the identified (T1, T2, T3, T41, or T42) TRS Sense circuit
and any other circuit(s) in the Transmission Solenoid/TRS Assembly harness connector?
Ye s>>
Repair the identified (T1, T2, T3, T41,orT42)TRSSensecircuitforashortto other circuit(s).
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
No>>
Using the schematics as a guide, check the Powertrain Control Module (PCM)terminals for corrosion,
damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems
are found, replace the PCM per the Service Information. With the scan tool,perform QUICK LEARN.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
6.INTERMITTENT WIRING AND CONNECTORS
The conditions necessary to set the DTC are not present at this time.
Using the schematics as a guide, inspect the wiring and connectors specifictothiscircuit.
Wiggle the wiring and connectors while checking for shorted and open circuits.
With the scan tool, check the DTC EVENT DATA to help identify the conditionsin which the DTC was set.
Were there any problems found?
Ye s>>
Repair as necessary.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
No>>
Te s t C o m p l e t e .
Compare the scan tool readings to the voltage readings listed on the Transmission Simulator.
Do the readings on the scan tool match the Transmission Simulator readings± 0.2 volts?
Ye s>>
Replace 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>>
Using the schematics as a guide, check the Powertrain Control Module (PCM)terminals for corrosion,
damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems
are found, replace the PCM per the Service Information. With the scan tool,perform QUICK LEARN.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
4.INTERMITTENT WIRING AND CONNECTORS
The conditions necessary to set this DTC are not present at this time.
Using the schematics as a guide, inspect the wiring and connectors specifictothiscircuit.
Wiggle the wires while checking for shorted and open circuits.
With the scan tool, check the DTC EVENT DATA to help identify the conditionsin which the DTC was set.
Were there any problems found?
Ye s>>
Repair as necessary.
Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21- TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - STANDARD PROCEDURE)
No>>
Te s t C o m p l e t e .