POSSIBLE CAUSES
GOOD TRIP EQUAL TO ZERO
(F42) ASD RELAY OUTPUT CIRCUIT
FUEL INJECTOR
INJECTOR CONTROL CIRCUIT OPEN
INJECTOR CONTROL CIRCUIT SHORTED TO GROUND
PCM
TEST ACTION APPLICABILITY
1 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 Turn the ignition off.
Disconnect the Fuel Injector harness connector.
Ignition on, engine not running.
With the DRBIIIt, actuate the ASD Relay.
Using a 12-volt test light connected to ground, backprobe the (F42) ASD Relay
Output circuit at the Fuel Injector harness connector.
Does the test light illuminate brightly?
All
Yes → Go To 3
No → Repair the open or high resistance in the (F42)ASD Relay Output
circuit.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
3 Turn the ignition off.
Disconnect the Fuel Injector harness connector.
Ignition on, engine not running.
Using a 12-volt test light connected to 12-volts, backprobe the Injector Control
circuit.
With the DRBIIIt, actuate the Fuel Injector.
Does the test light blink/flicker?
All
Yes → Replace the Fuel Injector.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
No → Go To 4
110
DRIVEABILITY - NGC
P0201-FUEL INJECTOR #1 — Continued
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