A/T - Multiple DTC's Stored Diagnosis

Article No.
98-23-12

11/23/98

^ TRANSMISSION - 4R44E - DIAGNOSTIC TROUBLE
CODES (DTCS) P0705, P0708, P1704 AND/OR P1705
STORED IN MEMORY

^ TRANSMISSION - 4R55E - DIAGNOSTIC TROUBLE
CODES (DTCS) P0705, P0708, P1704 AND/OR P1705
STORED IN MEMORY

^ TRANSMISSION - 4R7OW - DIAGNOSTIC TROUBLE
CODES (DTCS) P0705, P0708, P1704 AND/OR P1705
STORED IN MEMORY

^ TRANSMISSION - 5R55E - DIAGNOSTIC TROUBLE
CODES (DTCS) P0705, P0708, P1704 AND/OR P1705
STORED IN MEMORY

^ TRANSMISSION - AX4N - DIAGNOSTIC TROUBLE
CODES (DTCS) P0705, P0708, P1704 AND/OR P1705
STORED IN MEMORY

^ TRANSMISSION - AX4S - DIAGNOSTIC TROUBLE
CODES (DTCS) P0705, P0708, P1704 AND/OR P1705
STORED IN MEMORY

^ TRANSMISSION - E4OD - DIAGNOSTIC TROUBLE
CODES (DTCS) P0705, P0708, P1704 AND/OR P1705
STORED IN MEMORY

FORD:
1997 THUNDERBIRD
1998 CROWN VICTORIA, MUSTANG, TAURUS

LINCOLN-MERCURY:
1997 COUGAR, MARK VIII
1998 CONTINENTAL, GRAND MARQUIS, SABLE, TOWN CAR

LIGHT TRUCK:
1997 AEROSTAR
1997-98 ECONOLINE, EXPLORER, F-150, F-250 LD, MOUNTAINEER, RANGER

1998 EXPEDITION, NAVIGATOR

ISSUE
Diagnostic Trouble Codes (DTCs) P0705, P0708, P1704, and/or P17O5 may be stored in memory. This may be caused by the Powertrain Control Module (PCM) reading an unexpected bit pattern for manual lever position. This may be caused by the PCM, the wiring harness, the connectors, and/or the Digital Transmission Range Sensor (DTRS).





ACTION
Diagnose the cause of the failure by following the detailed Service Procedure in this TSB article and Figure 1.

SERVICE PROCEDURE

1. Connect the New Generation Star (NGS) Tester to the vehicle and call Parameter Identification Displays (PIDs) TR, TR_D, and TR_V.

2. Move the transmission range selector lever into each gear and stop.

3. Observe the PIDs while wiggling the harness, tapping on the sensor, and/or driving the vehicle.

Use PIDs TR, TR_D, and TR_V for codes:

^ P0705 - The computer saw a bit pattern which is not in the chart (Figure 1)

^ P0708 - The voltage for TR3A (displayed in TR_V) was higher than 1.8V

^ P1704 - The computer saw an in-between position when the test was initiated

^ P1705 - The computer did not see 0000 (P) or 0110 (N) when the test was initiated

4. Compare the PIDs to the chart in Figure 1.

OTHER APPLICABLE ARTICLES: NONE

WARRANTY STATUS: INFORMATION ONLY

OASIS CODES: 501000, 502000, 503000, 503300, 504000