Passport LX 2WD V6-3.2L SOHC (6VD1) (1997)
Technical Service Bulletin # 97-074
Date: 971101
Engine - Low Power, Hesitation, DTCs P0122,P1122,P1390..
97-074
November 10, 1997
Applies To:
1996-97 Passport - All LX and EX models
Low Power or Intermittent Engine Hesitation; DTC(s) PO122, P1122, P139O, P1391, P1392, and P1406
SYMPTOM
There is low engine power or intermittent engine hesitation, or the check engine light comes on with one or more of the following DTCs:
-
P0122 - Low voltage in TP circuit
-
P1122 - Intermittent low voltage in TP circuit
-
P1390 - Intermittent low voltage in G sensor
-
P1391 - Poor G sensor performance
-
P1392 - Low voltage from the G sensor
-
P1406 - Poor performance from EGR valve pintle position circuit
Also, evaporative emission, oxygen sensor, mass airflow sensor, and automatic transmission related DTCs may set.
PROBABLE CAUSE
If the PGM Tester indicates any of the above DTCs, the condition may be caused by a low resistance ground path in the 5-volt reference line due to a
faulty fuel tank pressure sensor.
CORRECTIVE ACTION
Measure the 5-volt reference at the Powertrain Control Module (PCM), and follow the diagnosis procedure to determine if the fuel tank pressure sensor
is faulty.
PARTS INFORMATION
Fuel Tank Pressure Sensor:
P/N 8-16257-276-0, H/C 5379540
REQUIRED SPECIAL TOOLS
Backprobe Set:
T/N O7SAZ-001000A, H/C 4615316
WARRANTY CLAIM INFORMATION
In warranty
The normal warranty applies.
Operation number:
121107
Flat rate time:
1.1 hours
Failed part:
P/N 8-16217-059-1
H/C 5310842
Defect code:
064
Contention code:
C99
Template ID:
97-074A
Skill level:
Repair Technician
Out of warranty: