Dodge Caliber. Manual — part 1228
5.
CHECK THE (T50) SECONDARY PRESSURE SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND
Measure the resistance between ground and the (T50) Secondary Pres-
sure Sensor Signal circuit.
Is the resistance below 5.0 ohms?
Yes
>> Repair the (T50) Secondary Pressure Sensor Signal circuit
for a short to ground.
Perform CVT VERIFICATION TEST. (Refer to 21 - TRANS-
MISSION/TRANSAXLE/AUTOMATIC - CVT - STANDARD
PROCEDURE)
No
>> Using the schematics as a guide, check the Transmission
Control Module (TCM) terminals for corrosion, damage, or
terminal push out. Pay particular attention to all power and
ground circuits. Check for any Service Bulletins for possible
causes that may apply. If no problems are found, replace
the TCM per the Service Information.
Perform CVT VERIFICATION TEST. (Refer to 21 - TRANS-
MISSION/TRANSAXLE/AUTOMATIC - CVT - STANDARD
PROCEDURE)
6.
CHECK THE (T72) 5 VOLT SUPPLY CIRCUIT FOR AN OPEN
While back probing, measure the voltage of the (T72) 5 Volt Supply cir-
cuit in Transmission Solenoid/Pressure Switch Assembly harness con-
nector.
Is the voltage 5.0 volts (± 0.2 volts)?
Yes
>> Repair the (T72) 5 Volt Supply circuit for an open or high
resistance.
Perform CVT VERIFICATION TEST. (Refer to 21 - TRANS-
MISSION/TRANSAXLE/AUTOMATIC - CVT - STANDARD
PROCEDURE)
No
>> Using the schematics as a guide, check the Transmission
Control Module (TCM) terminals for corrosion, damage, or
terminal push out. Pay particular attention to all power and
ground circuits. Check for any Service Bulletins for possible
causes that may apply. If no problems are found, replace
the TCM per the Service Information.
Perform CVT VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - CVT -
STANDARD PROCEDURE)
PM
AUTOMATIC - CVT-ELECTRICAL DIAGNOSTICS
21 - 211
7.
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 specific to this circuit.
Wiggle the wires while checking for shorted and open circuits.
Were there any problems found?
Yes
>> Repair as necessary.
Perform CVT VERIFICATION TEST. (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - CVT -
STANDARD PROCEDURE)
No
>> Test Complete.
21 - 212
AUTOMATIC - CVT-ELECTRICAL DIAGNOSTICS
PM
P0848-SECONDARY OIL PRESSURE SENSOR CIRCUIT HIGH
For a complete wiring diagram Refer to Section 8W.
PM
AUTOMATIC - CVT-ELECTRICAL DIAGNOSTICS
21 - 213
Theory of Operation
The Transmission Control Module (TCM) monitors the input voltage from the secondary pulley pressure sensor.
When the voltage is above a predetermined limit a DTC will set.
•
When Monitored:
Ignition on, system voltage between 9.0 and 16.0 volts.
Transmission temperature greater than -20° C (-4° F)
No active DTCs from the following:
•
Secondary Oil Pressure Sensor Low
•
Sensor ground
•
Set Condition:
When the monitored voltage rises above 4.7 volts for the period of 5 seconds.
Possible Causes
(T72) 5 VOLT SUPPLY CIRCUIT SHORT TO VOLTAGE
(T50) SECONDARY PRESSURE SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE
SECONDARY PRESSURE SENSOR
TRANSMISSION CONTROL MODULE
Always perform the CVT Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 -
TRANSMISSION/TRANSAXLE/AUTOMATIC - CVT - STANDARD PROCEDURE)
Diagnostic Test
1.
CHECK THE SECONDARY PRESSURE SENSOR VOLTAGE
With the scan tool, read the Secondary Pulley Pressure Sensor voltage.
Is the voltage greater than 4.7 volts?
Yes
>> Go To 2
No
>> Go To 6
2.
CHECK THE (T72) 5 VOLT SUPPLY CIRCUIT
Turn the ignition off to the lock position.
Disconnect the Transmission Solenoid/Pressure Switch Assembly har-
ness connector.
Ignition on, engine not running.
Measure the voltage of the (T72) 5 Volt Supply circuit in the Transmis-
sion Solenoid/Pressure Switch Assembly harness connector.
Is the voltage between 4.5 and 5.5 volts?
Yes
>> Go To 3
No
>> Go To 5
21 - 214
AUTOMATIC - CVT-ELECTRICAL DIAGNOSTICS
PM
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст