Symptom:
P1861-SIPHON LINE DISCONNECTED
When Monitored and Set Condition:
P1861-SIPHON LINE DISCONNECTED
When Monitored: With the ignition key on.
Set Condition: PCM compares the primary tank level with the secondary tank level. If
the the PCM detects the primary side lower than the secondary side by a calibrated
amount the DTC will set.
POSSIBLE CAUSES
GOOD TRIP EQUAL TO ZERO
VISUALLY INSPECT FUEL TANK
FUEL LEVEL SIGNAL CIRCUIT SHORTED TO GROUND
FUEL LEVEL SIGNAL CIRCUIT OPEN
GROUND CIRCUIT OPEN
INTERNAL INSPECTION OF THE FUEL TANK AND SIPHON HOSE
FUEL LEVEL SENSOR
TEST ACTION APPLICABILITY
1 NOTE: Diagnose any Fuel Gauge high or low DTCs first, if set along with
this DTC.
NOTE: The following test must be performed on both Fuel Level Sensor.
Inspect the Fuel Pump Module harness connectors for any corrosion or damage.
Ignition on, engine not running.
With the DRBIIIt, read DTCs and record the related Freeze Frame data.
Is the Good Trip Counter displayed and equal to zero?
All
Yes → Go To 2
No → Refer to the INTERMITTENT CONDITION symptom in the
Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
2 Visually inspect both sides of the Fuel Tank for damage that may restrict the Fuel
Level Sensor float from moving.
Is the Fuel Tank OK?
All
Yes → Go To 3
No → Replace the Fuel Tank as necessary.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
267
DRIVEABILITY - NGC
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