Dodge Neon / Neon SRT-4. Manual — part 639
TEST
ACTION
APPLICABILITY
9
Turn the ignition off to the lock position.
Disconnect the PCM harness connector.
Disconnect the TRS harness connector.
Remove the Transmission Control Relay.
Note: Check connectors - Clean/repair as necessary.
Connect a jumper wire between the Fused B+ and Transmission Control Relay
Output circuits in the Transmission Control Relay connector.
Ignition on, engine not running.
CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING
THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMI-
NALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL
MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.
Measure the voltage of the Speed Sensor Ground circuit.
Is the voltage above 0.5 volts?
All
Yes
→ Repair the Speed Sensor Ground circuit for a short to voltage.
Perform 40/41TE (NGC) TRANSMISSION VERIFICATION
TEST - VER 1.
No
→ Go To 10
10
Using the schematics as a guide, inspect the wiring and connectors. Repair as
necessary. Pay particular attention to all power and ground circuits.
If there are no possible causes remaining, view repair.
All
Repair
Replace the Powertrain Control Module per the Service Informa-
tion. WITH THE DRBIII
t PERFORM QUICK LEARN AND
REPROGRAM PINION FACTOR.
Perform 40/41TE (NGC) TRANSMISSION VERIFICATION
TEST - VER 1.
11
The conditions necessary to set the 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 and connectors 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 40/41TE (NGC) TRANSMISSION VERIFICATION
TEST - VER 1.
No
→ Test Complete.
70
TRANSMISSION - NGC
P0720-OUTPUT SPEED SENSOR ERROR —
Continued
Symptom:
P0725-ENGINE SPEED SENSOR CIRCUIT
When Monitored and Set Condition:
P0725-ENGINE SPEED SENSOR CIRCUIT
When Monitored:
Whenever the engine is running.
Set Condition:
The Engine RPM is less than 390 or greater than 8000 for more than 2
seconds while the engine is running.
POSSIBLE CAUSES
ENGINE DTCS PRESENT
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
2
Start the engine.
NOTE: This DTC is not a Transmission Input Speed Sensor DTC.
With the DRBIII
t, Check the STARTS SINCE SET counter for P0725.
NOTE: This counter only applies to the last DTC set.
Is the STARTS SINCE SET counter for P0725 set at 0?
All
Yes
→ Go To 3
No
→ Go To 5
71
TRANSMISSION - NGC
TEST
ACTION
APPLICABILITY
3
With the DRBIII
t, read Engine DTCs.
Are there any Engine DTC’s present?
All
Yes
→ Refer to the Powertrain category and perform the appropriate
symptom.
Perform 40/41TE (NGC) TRANSMISSION VERIFICATION
TEST - VER 1.
No
→ Go To 4
4
Using the schematics as a guide, inspect the wiring and connectors. Repair as
necessary. Pay particular attention to all power and ground circuits.
If there are no possible causes remaining, view repair.
All
Repair
Replace the Powertrain Control Module per the Service Informa-
tion. WITH THE DRBIII
t PERFORM QUICK LEARN AND
REPROGRAM PINION FACTOR.
Perform 40/41TE (NGC) TRANSMISSION VERIFICATION
TEST - VER 1.
5
The conditions necessary to set the 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 and connectors 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 40/41TE (NGC) TRANSMISSION VERIFICATION
TEST - VER 1.
No
→ Test Complete.
72
TRANSMISSION - NGC
P0725-ENGINE SPEED SENSOR CIRCUIT —
Continued
Symptom:
P0731-GEAR RATIO ERROR IN 1ST
When Monitored and Set Condition:
P0731-GEAR RATIO ERROR IN 1ST
When Monitored:
The Transmission gear ratio is monitored continuously while the
transmission is in gear.
Set Condition:
If the ratio of the Input RPM to the Output RPM does not match the
current gear ratio.
POSSIBLE CAUSES
RELATED DTC’S PRESENT
INTERNAL TRANSMISSION
INTERMITTENT GEAR RATIO ERRORS
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
73
TRANSMISSION - NGC
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст