Jeep XJ. Manual - part 894

Symptom:

P1744-SOLENOID A SHORTED TO GROUND

When Monitored and Set Condition:

P1744-SOLENOID A SHORTED TO GROUND

When Monitored:

Continuously while in 2nd and 3rd gear.

Set Condition:

Solenoid A is turned on and a low voltage is detected on the Solenoid A

Control circuit.

POSSIBLE CAUSES

INTERMITTENT WIRING AND/OR CONNECTORS

SHORT TO GROUND BETWEEN THE 8-WAY CONNECTOR AND THE TCM CONNECTOR

SHORT TO GROUND BETWEEN THE 8-WAY CONNECTOR AND THE SOLENOID A CONNEC-
TOR

SOLENOID A - RESISTANCE OUT OF RANGE

TCM - SOLENOID A CONTROL CIRCUIT

TEST

ACTION

APPLICABILITY

NOTE: Always perform diagnostics with a fully charged battery to avoid
diagnosing false symptoms.
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.
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
Repair as necessary.
Verify the brake switch input to the TCM is working correctly.
Perform the shift lever position test and adjust the linkage if necessary.
Test drive vehicle to verify customer complaint.
With the DRBIII

t, read the PCM DTC’s. Check and repair all PCM DTC’s before

performing transmission diagnostics.
With the DRBIII

t, read the TCM DTC’s.

Note: Check 1 trip failures and diagnose them as DTC’s (Hard codes)
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.

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When monitored: Continuously while in 2nd and 3rd gear.
When set: Solenoid A is turned on and a low voltage is detected on the Solenoid A
Control circuit.
This is the When monitored / When set conditions for DTC P1744.

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TRANSMISSION