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Jeep Grand Cherokee WJ. Manual - part 1094
Symptom:
P1734-2C PRESSURE SWITCH SENSE CIRCUIT
When Monitored and Set Condition:
P1734-2C PRESSURE SWITCH SENSE CIRCUIT
When Monitored:
Whenever the engine is running.
Set Condition:
The appropriate code is set if one of the pressure switches are open or
closed at the wrong time in a given gear .
POSSIBLE CAUSES
RELATED RELAY DTC’S PRESENT
INTERMITTENT WIRING & CONNECTORS
2C PRESSURE SWITCH SENSE CIRCUIT OPEN
TRANSMISSION RELAY OUTPUT CIRCUIT OPEN
2C PRESSURE SWITCH SENSE CIRCUIT SHORT TO GROUND
2C PRESSURE SWITCH SENSE CIRCUIT SHORT TO VOLTAGE
2C PRESSURE SWITCH
TCM - 2C PRESSURE SWITCH
TEST
ACTION
APPLICABILITY
1
NOTE: Low fluid level can be the cause of many transmission problems. If
the fluid level is low locate and repair the leak then check and adjust the
fluid level per the service information.
NOTE: Always perform diagnostics with a fully charged battery to avoid
false symptoms.
With the DRBIII
t, read the engine DTC’s. Check and repair all engine DTC’s prior
to performing transmission symptom diagnostics.
With the DRBIII
t, read Transmission DTC’s. Record all DTC’s and 1 Trip Failures.
NOTE: Diagnose 1 Trip Failures as a fully matured DTC.
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
Repair as necessary.
Perform the Shift Lever Position Test. If the test does not pass, refer to Symptom test
for P0705 Check Shifter Signal.
For Gear Ratio DTC’s, check and record all CVI’s.
Most DTC’s set on start up but some must be set by driving the vehicle such that all
diagnostic monitors have run.
Note: Verify flash level of transmission controller. Some problems are
corrected by software upgrades to the transmission controller.
NOTE: Check for applicable TSB’s related to the problem.
Perform this procedure prior to Symptom diagnosis.
45RFE AUTO
TRANS
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TRANSMISSION