Dodge ZB 2005 Service Manual page 1208

P0201-INJECTOR #1 CONTROL CIRCUIT —
FUEL INJECTOR DRIVER CIRCUIT SHORTED TO GROUND
PCM
TEST
1 Ignition on, engine not running.
NOTE: Diagnose any Misfire DTCs before continuing. If a Misfire is detected
for a particular cylinder, the PCM will shut down that Injectors Control
circuit.
With the DRBIII , read DTCs and record the related Freeze Frame data.
Is the Good Trip Counter displayed and equal to zero?
Yes → Go To 2
→ Refer to the INTERMITTENT CONDTION Symptom (Diagnostic
No
2 Turn the ignition off.
Disconnect the Fuel Injector harness connector.
Ignition on, engine not running.
With the DRBIII , actuate the ASD Relay.
Using a 12-volt test light connected to ground, probe the (K342) ASD Relay Output
circuit at the Fuel Injector harness connector.
Does the test light illuminate brightly?
Yes → Go To 3
→ Repair the open or short to ground in the (K342) ASD Relay
No
3 Using a 12-volt test light connected to 12-volts, backprobe the Fuel Injector Driver
circuit.
With the DRBIII , actuate the Fuel Injector.
What is the state of the test light while actuating the Fuel Injector?
Brightly blinking or flickering.
ON constantly
OFF constantly
4 Turn the ignition off.
Disconnect the PCM harness connectors.
Measure the resistance between ground and the Fuel Injector Control circuit at the
Fuel Injector harness connector.
Is the resistance below 100 ohms?
Yes → Repair the short to ground in the Fuel Injector Control circuit.
→ Go To 6
No
POSSIBLE CAUSES
ACTION
Procedure).
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Output circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Replace the Fuel Injector.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Go To 4
Go To 5
Perform POWERTRAIN VERIFICATION TEST VER - 5.
DRIVEABILITY - GAS
Continued
87
APPLICABILITY
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