Dodge Caliber. Manual — part 936
8.
(K614) FUEL INJECTOR 4 LOW-SIDE CONTROL CIRCUIT OPEN OR HIGH RESISTANCE
Measure the resistance of the (K614) Fuel Injector 4 Low-Side Control
circuit between the Fuel Injector 4 harness connector and the Engine
Control Module harness connector.
Is the resistance below 10.0 ohms?
Yes
>> Replace Fuel Injector 4 in accordance with the Service
Information.
Perform the ECM Verification Test Ver. 1. (Refer to 9 -
ENGINE - DIAGNOSIS AND TESTING)
No
>> Repair the (K614) Fuel Injector 4 Low-Side Control circuit
for an open circuit or high resistance.
Perform the ECM Verification Test Ver. 1. (Refer to 9 -
ENGINE - DIAGNOSIS AND TESTING)
PM
ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
9 - 1031
P0234-TURBOCHARGER OVERBOOST CONDITION
For a complete wiring diagram Refer to Section 8W
9 - 1032
ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
PM
•
When Monitored:
With the engine running and the ECM attempting to govern turbocharger boost pressure.
•
Set Condition:
The Intake Air Temperature/Boost Pressure Sensor indicates actual turbocharger boost is greater than the
ECM setpoint for 6.5 seconds.
Possible Causes
INTERMITTENT DTC
INTAKE AIR RESTRICTION
INTAKE AIR LEAK
VACUUM HOSES/TUBES
BOOST PRESSURE ACTUATOR
TURBOCHARGER
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
Diagnostic Test
1.
CHECK FOR ACTIVE DTC
Turn the ignition on.
With the scan tool, Clear DTCs in the Engine Control Module (ECM).
Test drive the vehicle.
With the scan tool, select View DTCs.
Is the status Active for this DTC?
Yes
>> Go To 2
No
>> Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
2.
CHECK FOR INTAKE AND EXHAUST SYSTEM RESTRICTIONS
NOTE: Damaged, restricted or poorly connected intake and turbocharger related tubes can cause this DTC
to set.
Inspect all air intake, crankcase vent and turbocharger related hoses/tubes and connections.
Inspect the complete exhaust system for damaged, bent or clogged pipes that can cause exhaust system restric-
tions and excessive backpressure.
Were any problems found?
Yes
>> Repair or replace as necessary.
Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)
No
>> Go to 3
PM
ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
9 - 1033
3.
INTAKE AIR TEMPERATURE/BOOST PRESSURE SENSOR CIRCUIT RESISTANCE
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Intake Air Temp/Boost Pressure Sensor harness connector.
Measure the resistance of the each of the Boost Pressure Sensor circuits (3 circuits) between the Intake Air Temp/
Boost Pressure Sensor and ECM harness connectors.
Is the resistance below 10.0 ohms for each measurement?
Yes
>> 4
No
>> Repair the Boost Pressure Sensor circuit(s) that measure above 10.0 ohms for an open.
Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)
4.
CHECK THE BOOST PRESSURE SYSTEM
Refer to the CHECKING THE BOOST PRESSURE SYSTEM to check the boost pressure supply hoses, Boost
Actuator and Turbocharger boost output.
With the scan tool, select View DTCs.
View repair.
Yes
>> Repair as necessary.
Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)
9 - 1034
ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
PM
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