P0944 крайслер ошибка

Symptom:

P0944-LOSS OF PRIME

When Monitored and Set Condition:

P0944-LOSS OF PRIME

When Monitored:

If the transmission is slipping in any forward gear and the pressure

switches are not indicating pressure, a loss of prime test is run.

Set Condition:

If the Transmission begins to slip in a forward gear and the pressure

switch(s) that should be closed are open, a loss of prime test begins. Available elements are
turned on by the PCM to see if pump prime exists. The DTC sets if no pressure switches
respond.

POSSIBLE CAUSES

SHIFT LEVER POSITION

PLUGGED TRANSMISSION OIL FILTER

TRANSMISSION OIL PUMP

INTERMITTENT WIRING AND CONNECTORS

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 Engine DTC’s. Check and repair all Engine DTC’s prior to

performing any 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 P0706 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 Powertrain Control Module. Some problems are
corrected by software upgrades to the Transmission and Engine software.
NOTE: Check for applicable TSB’s related to the problem.
Perform this procedure prior to Symptom diagnosis.

All

Continue

Go To

2

272

TRANSMISSION — NGC

TEST

ACTION

APPLICABILITY

2

Place the gear selector in park.
Start the engine.
NOTE: The TRANS TEMP DEG must be at least 43° C or 110° F before
performing the following steps.
The Transmission must be at operating temperature prior to checking pressure. A
cold Transmission will give higher readings.
Place the Transmission in Reverse.
With the DRBIII

t, observe the Transmission Pressure Switch states.

Are any of the Pressure Switches closed?

All

Yes

→ Go To 3

No

→ Go To 5

3

The conditions necessary to set this DTC are not present at this time.
Test drive the vehicle. Allow the Transmission to shift through all gears and ranges.
Did you experience a delayed engagement and/or a no drive condition?

All

Yes

→ Go To 5

No

→ Go To 4

4

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 wiring while checking for shorted and open circuits.
With the DRBIII

t, check the EATX EVENT DATA to help identify the conditions in

which the DTC was set.
Were there any problems found?

All

Yes

→ Repair as necessary.

Perform 41TE (NGC) TRANSMISSION VERIFICATION TEST —
VER 1.

No

→ Test Complete.

5

With the DRBIII

t, perform a Shift Lever Position test. Follow the instructions on the

DRBIII

t.

Did the Shift Lever Position Test pass?

All

Yes

→ Go To 6

No

→ Refer to symptom list and perform test for DTC P0706.

Perform 41TE (NGC) TRANSMISSION VERIFICATION TEST —
VER 1.

6

Remove and inspect the Transmission Oil Pan and Transmission Oil Filter per the
Service Information.
Does the Transmission Oil Pan contain excessive debris and/or is the Oil Filter
plugged?

All

Yes

→ Repair the cause of the plugged Transmission Oil Filter. Refer to

the Service Information for the proper repair procedure.
Perform 41TE (NGC) TRANSMISSION VERIFICATION TEST —
VER 1.

No

→ Go To 7

273

TRANSMISSION — NGC

P0944-LOSS OF PRIME —

Continued

TEST

ACTION

APPLICABILITY

7

If there are no possible causes remaining, view repair.

All

Repair

Replace the Transmission Oil Pump per the Service Information.
Perform 41TE (NGC) TRANSMISSION VERIFICATION TEST —
VER 1.

274

TRANSMISSION — NGC

P0944-LOSS OF PRIME —

Continued

Symptom:

P0952-AUTOSTICK INPUT CIRCUIT LOW

When Monitored and Set Condition:

P0952-AUTOSTICK INPUT CIRCUIT LOW

When Monitored:

The AutoStick circuit is checked every .007 seconds, with the ignition

on, and in both AutoStick and non-AutoStick modes.

Set Condition:

If either the monitored upshift or downshift switch voltages are reported

closed in a non AutoStick mode or the monitored voltage drops below 0.3 volts.

POSSIBLE CAUSES

AUTOSTICK/OD OFF MUX INPUT CIRCUIT SHORT TO GROUND

AUTOSTICK SWITCH

POWERTRAIN CONTROL MODULE

INTERMITTENT WIRING AND CONNECTORS

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 Engine DTC’s. Check and repair all Engine DTC’s prior to

performing any 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 P0706 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 Powertrain Control Module. Some problems are
corrected by software upgrades to the Transmission and Engine software.
NOTE: Check for applicable TSB’s related to the problem.
Perform this procedure prior to Symptom diagnosis.

All

Continue

Go To

2

2

With the DRBIII

t, Check the STARTS SINCE SET counter for P0952.

Note: This counter only applies to the last DTC set.
Is the Starts Since Set counter set at 0?

All

Yes

→ Go To 3

No

→ Go To 6

275

TRANSMISSION — NGC

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