Dodge Dakota (ND). Manual — part 1021

P0732-GEAR RATIO ERROR IN 2ND (CONTINUED)

13.

2C ACCUMULATOR

Check the 2C 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 14

14.

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 2C 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.

15.

CHECK IF DTC RESET

Did the DTC P0732 reset during the road test?

Yes

>> Go To 16

No

>> Go To 17

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P0732-GEAR RATIO ERROR IN 2ND (CONTINUED)

16.

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 misinstalled Primary Transmission
Oil Filter and/or seal.

— Check for cut and/or missing #7 and #5 check balls in the main valve body.

— Check the 2C 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 dribbler assembly.

— Check the 2C clutch piston seals, and bleed orifice.

— Check the main regulator valve for sticking in its bore and the flatness of the pump valve body and pump hous-
ing faces.

— Check for a improperly assembled 2C clutch with the thick reaction plate not against the case.

View repair

Repair

Repair as necessary. Refer to the Service Information for proper repair procedures.

Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1.

17.

INTERMITTENT DTC

The conditions to set this DTC are not currently present.

With the scan tool, check the EATX DTC EVENT DATA to help identify the conditions in which the DTC was set.

- If the DTC Event Data shows fault P0732 was set in Park, Reverse, or Neutral, replace the Powertrain Control
Module.

- If the DTC Event Data shows fault P0732 set with input RPM = zero, check the input speed sensor and related
wiring.

- If the DTC Event Data shows fault P0732 set with line pressure significantly below desired line pressure, check for
the cause of low line pressure (i.e., oil level, misinstalled or damaged primary filter or filter seal, sticking main reg-
ulator valve in pump, etc.).

- If the DTC Event Data shows fault P0732 set with the UD or 2C pressure switch open (but line pressure matches
Desired Line Pressure), air check the UD and 2C hydraulic clutch circuits for leakage per the Service Information.
If the UD and 2C hydraulic clutch circuits are OK, replace the Transmission Solenoid/TRS assembly.

Check the gearshift linkage adjustment.

Intermittent Gear Ratio DTCs can be set by problems in the Input and Output Speed Sensor circuits and/or Speed
Sensor Ground circuit.

Remove the Starter Relay.

NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition.
Install Transmission Simulator, Miller tool #8333.

Wiggle wiring and connectors while checking for intermittent operation with the Transmission Simulator.

Gear ratio DTC’s can also be set under extreme temperature conditions.

Verify if the problem is only experienced under extreme hot or cold conditions.

Were there any problems found.

Yes

>> Repair as necessary.

Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1.

No

>> Test Complete.

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P0733-GEAR RATIO ERROR IN 3RD

For the Transmission circuit diagram (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE -
SCHEMATICS AND DIAGRAMS)

For a complete wiring diagram Refer to Section 8W

•

When Monitored:
Continuously with the ignition on, engine running, with the transmission in gear.

•

Set Condition:
If the ratio of the Input RPM to the Output RPM does not match the current gear ratio. This DTC can take up
to five minutes of problem identification before illuminating the MIL

Possible Causes

RELATED DTC’S PRESENT

INPUT SPEED SENSOR OR WIRING

LOW FLUID LEVEL

CRACKED OR MISINSTALLED PRIMARY OIL FILTER OR SEAL

BENT OR BROKEN ACCUMULATOR COVER ON MAIN VALVE BODY

WORN SOLENOID SWITCH VALVE OR PLUGS

STUCK OR STICKING MAIN REGULATOR VALVE

BURNED UD OR OD CLUTCH

CUT OD OR UD PISTON SEAL

BROKEN OR MISSING UD OR OD BLEED ORIFICE IN MAIN VALVE BODY

BROKEN OR MISSING BLEED ORIFICE IN UD OR OD CLUTCH PISTON

CUT OD OR UD ACCUMULATOR PISTON SEAL

CRACKED OD OR UD ACCUMULATOR PISTON

CUT OR MISSING #6 CHECK BALL

TRANSMISSION SOLENOID/TRS ASSEMBLY

BROKEN WELD - REVERSE CARRIER HUB TO CARRIER

BROKEN REACTION SHAFT SUPPORT SEAL RING

POOR MACHINING ON PUMP VALVE BODY FACE

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 - TRANSMIS-
SION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - DIAGNOSIS AND TESTING).

Theory of Operation

The transmission system uses two speed sensors, one to measure input RPM and one to measure output RPM.
These inputs are essential for proper transmission operation. Therefore, the integrity of this data is verified through
the following checks:

1) Once in a particular gear, if the gear ratio varies from the correct gear ratio, the corresponding in-gear trouble
code is set (DTCs P0731–36).

2) An excessive change in input or output speeds indicating signal intermittent may result in the DTCs P0715 and/or
P0720 being set.

3) If the common speed sensor ground circuit is lost, both sensor inputs will read the pulses from the input speed
sensor when at a stop in neutral. Since the input speed sensor reads 60 teeth from the input clutch hub and the
output speed sensor reads 30 teeth from the park gear, the result is an apparent speed ratio of 1:2 and may cause
the DTC P1794 to set.

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P0733-GEAR RATIO ERROR IN 3RD (CONTINUED)

Diagnostic Test

1.

DETERMINING IF RELATED DTC’S ARE PRESENT

With the scan tool, check for other transmission DTC’s

Are there any Transmission; solenoid, line pressure, speed sensor, and/or loss of prime DTC’s present?

Yes

>> Refer to appropriate symptom in the Transmission category. Perform the test for P0944–LOSS OF

PRIME first if it is present.

Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1.

No

>> Go To 2

2.

CHECK EATX DTC EVENT DATA

With the scan tool, read and record the EATX DTC EVENT DATA.

NOTE: Make sure to record all EATX DTC EVENT DATA stored in the scan tool for future reference in this
test procedure.

Does the EATX DTC EVENT DATA display information for the DTC P0733?

Yes

>> Go To 4

No

>> Go To 3

3.

TARGET GEAR IN EATX DTC EVENT DATA

In the EATX DTC EVENT DATA, identify the DTC that was recorded earlier.

Does the EATX DTC EVENT DATA display information for the DTC P1790, with target gear = 3rd, or with
both OD and UD clutches applying?

Yes

>> Go To 4

No

>> Go To 7

4.

CHECK RPM IN EATX DTC EVENT DATA

Refer to the EATX DTC EVENT DATA recorded earlier.

Does the Input RPM read zero?

Yes

>> Check the input speed sensor and wiring. Refer to test P0715 and diagnose as if the DTC is current.

Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1.

No

>> Go To 5

5.

CHECK LINE PRESSURE READING

Refer to the EATX DTC EVENT DATA recorded earlier.

Is the line pressure reading more than 10 psi below the desired line pressure?

Yes

>> Go To 6

No

>> Go To 7

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