Dodge Dakota (R1). Manual — part 897
POSSIBLE CAUSES
SENSOR GROUND CIRCUIT OPEN
TRANSMISSION LINE PRESSURE LOW
GOV PRESS SENSOR SIGNAL CIRCUIT SHORTED TO SENSOR GND INSIDE TRANS
5-VOLT SUPPLY CIRCUIT OPEN INSIDE TRANS
5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND INSIDE TRANS
5-VOLT SUPPLY CIRCUIT SHORTED TO SENSOR GROUND INSIDE TRANS
SENSOR GROUND CIRCUIT OPEN INSIDE TRANS
GOVERNOR PRESSURE SENSOR
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, read PCM DTCs.
Is the Good Trip counter for P1762 DTC displayed and equal to 0?
All
Yes
→
No
→
2
Start the engine.
Allow the transmission to reach normal operating temperature.
Check the transmission fluid level and condition.
Is the fluid level correct and the fluid condition OK?
All
Yes
→
No
→
Repair as necessary the transmission fluid level and condition.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
3
Turn the ignition on.
With the DRBIII
t, read PCM DTCs.
Are any other transmission DTCs present?
All
Yes
→
Repair all other transmission DTCs before proceeding.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
No
→
4
Turn the ignition on.
With the DRBIII
t, read PCM DTCs.
Is the Park/Neutral DTC present?
All
Yes
→
Repair the Park/Neutral DTC before proceeding.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
No
→
320
TRANSMISSION
P1762-GOV PRESS SEN OFFSET VOLTS TOO LO OR HIGH —
Continued
TEST
ACTION
APPLICABILITY
5
CAUTION: Apply the parking brake.
Start the engine.
WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
Place the gear selector in Neutral.
With the DRBIII
t, read the governor pressure voltage.
Measure the voltage of the Governor Pressure Sensor Signal circuit by back probing
at the PCM.
Compare the voltmeter reading of the Governor Pressure Sensor Signal circuit to the
DRB Governor Pressure Sensor voltage.
Does the DRBIII
t Gov Press Sensor voltage match the governor pressure sensor
voltage on the voltmete
All
Yes
→
No
→
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
6
Turn the ignition off.
Disconnect the Transmission Solenoid Assembly harness connector.
Check connectors - Clean/repair as necessary
Turn the ignition on.
Measure the voltage of the 5-volt Supply circuit in the Transmission Solenoid
Assembly harness connector.
Is the voltage between 4.8 and 5.5 volts?
All
Between 4.8 and 5.5 volts
Above
Below
7
Turn the ignition off.
Disconnect the Transmission Solenoid Assembly harness connector.
Disconnect the PCM harness connectors.
Check connectors - Clean/repair as necessary.
Turn the ignition on.
Measure the voltage of the Governor Pressure Sensor Signal circuit in the Trans-
mission Solenoid Assembly harness connector.
Is the voltage above 0.5 volt?
All
Yes
→
Repair the Governor Pressure Sensor Signal circuit for a short to
voltage.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
No
→
321
TRANSMISSION
P1762-GOV PRESS SEN OFFSET VOLTS TOO LO OR HIGH —
Continued
TEST
ACTION
APPLICABILITY
8
Turn the ignition off.
Disconnect the Transmission Solenoid Assembly harness connector.
Disconnect the PCM harness connectors.
Check connectors - Clean/repair as necessary
Measure the resistance between the Governor Pressure Sensor Signal circuit and the
5-volt Supply circuit in the Transmission Solenoid Assembly harness connector.
Is the resistance above 100 kohms?
All
Yes
→
No
→
Repair the Governor Pressure Sensor Signal circuit for a short to
the 5-volt Supply circuit.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
9
Turn the ignition off.
Disconnect the Transmission Solenoid Assembly harness connector.
Disconnect the PCM harness connector.
Check connectors - Clean/repair as necessary
Measure the resistance between ground and the Governor Pressure Sensor Signal
circuit in the Transmission Solenoid Assembly harness connector.
Is the resistance above 100 kohms?
All
Yes
→
No
→
Repair the Governor Pressure Sensor Signal circuit for a short to
ground.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
10
Turn the ignition off.
Disconnect the Transmission Solenoid Assembly harness connector.
Disconnect the PCM C1 and C2 harness connectors.
Check connectors - Clean/repair as necessary
Measure the resistance between the Governor Pressure Sensor Signal circuit and the
Sensor Ground circuit in the Transmission Solenoid Assembly harness connector.
Is the resistance above 100 kohms?
All
Yes
→
No
→
Repair the Governor Pressure Sensor Signal circuit for a short to
the Sensor Ground circuit.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
11
Turn the ignition off.
Disconnect the Transmission Solenoid Assembly harness connector.
Disconnect the PCM harness connector.
Check connectors - Clean/repair as necessary
Measure the resistance of the Governor Pressure Sensor Signal circuit between the
Transmission Solenoid Assembly harness connector and the PCM harness connector.
Is the resistance above 5.0 ohms?
All
Yes
→
Repair the Governor Pressure Sensor Signal circuit for an open.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
No
→
322
TRANSMISSION
P1762-GOV PRESS SEN OFFSET VOLTS TOO LO OR HIGH —
Continued
TEST
ACTION
APPLICABILITY
12
Turn the ignition off.
Disconnect the Transmission Solenoid Assembly harness connector.
Disconnect the PCM C1 harness connector.
Check connectors - Clean/repair as necessary.
Measure the resistance of the Sensor Ground circuit between the Transmission
Solenoid Assembly harness connector and the PCM C1 harness connector.
Is the resistance below 5.0 ohms?
All
Yes
→
No
→
Repair the Sensor Ground circuit for an open.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
13
Turn the ignition off.
NOTE: All harness connectors must be connected before proceeding.
Place the vehicle on a hoist that will allow all 4 wheels to rotate freely.
WARNING: BE SURE TO KEEP HANDS AND FEET CLEAR OF ROTATING
WHEELS.
Connect a 700 kPa (100 PSI) transmission pressure gauge to the accumulator test
port.
Start the engine.
WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
Allow the transmission to reach normal operating temperature.
Check the transmission line pressure by performing the Hydraulic Pressure Test in
the Service Information.
Was the transmission line pressure within specification?
All
Yes
→
No
→
Repair the transmission line pressure as necessary. Refer to the
Service Information for repair procedures.
Perform TRANSMISSION VERIFICATION TEST VER - 1.
14
Turn the ignition off.
Place the vehicle on a hoist that will allow all 4 wheels to rotate freely.
CAUTION: Ensure all 4 wheels do not touch the ground.
WARNING: BE SURE TO KEEP HANDS AND FEET CLEAR OF ROTATING
WHEELS.
Connect a 700 kPa (100 PSI) transmission pressure gauge to the governor pressure
test port.
Start the engine.
WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
Allow the transmission to reach normal operating temperature.
Place the gear selector lever in Low (1).
Compare the DRBIII
t Governor Pressure Sensor reading with the pressure gauge
reading while slowly increasing vehicle speed to 40 km/h (25 MPH).
Does the DRBIII
t governor pressure reading match the pressure gauge reading at all
speeds?
All
Yes
→
No
→
323
TRANSMISSION
P1762-GOV PRESS SEN OFFSET VOLTS TOO LO OR HIGH —
Continued
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