Dodge ZB 2005 Service Manual page 1319

STARTING
Symptom:
*CHECKING FUEL DELIVERY
FUEL PUMP RELAY
FUEL PRESSURE OUT OF SPECIFICATION
RESTRICTED FUEL SUPPLY LINE
FUEL PUMP INLET STRAINER PLUGGED
FUEL PUMP
FUSED B+ OR FUSED IGNITION SWITCH CIRCUIT OPEN
(A141) FUEL PUMP RELAY OUTPUT CIRCUIT OPEN
(Z1) GROUND CIRCUIT OPEN/HIGH RESISTANCE
FUEL PUMP MODULE
TEST
1 Ignition on, engine not running.
With the DRBIII , actuate the Fuel System test.
NOTE: It may be necessary to use a mechanics stethoscope in the next step.
Listen for fuel pump operation at the fuel tank.
Does the Fuel Pump operate?
Yes → Go To 2
→ Go To 5
No
CAUTION: Stop All Actuations.
2 Turn the ignition off.
WARNING: The fuel system is under a constant pressure even with the
engine off. Before testing or servicing any fuel system hose, fitting or line,
the fuel system pressure must be released.
Install a fuel pressure gauge at the engine.
Ignition on, engine not running.
With the DRBIII , actuate the ASD Fuel System test and observe the fuel pressure
gauge.
NOTE: Fuel pressure specification is 379 KPa +/- 14 KPa (55 psi +/- 2 psi).
Choose a conclusion that best matches your fuel pressure reading.
Below Specification
Within Specification
Above Specification
CAUTION: Stop All Actuations.
POSSIBLE CAUSES
ACTION
Go To 3
Test Complete.
Replace the fuel filter/fuel pressure regulator.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
198
APPLICABILITY
All
All