Dodge ZB 2005 Service Manual page 1143

DRIVEABILITY - GAS
Symptom:
INTERMITTENT CONDITION
INTERMITTENT CONDITION
TEST
1 NOTE: The conditions that set the DTC are not present at this time. The
following list may help in identifying the intermittent condition.
WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
Refer to any Technical Service Bulletins (TSBs) that may apply.
Review the DRBIII Freeze Frame information. If possible, try to duplicate the
conditions under which the DTC set.
With the engine running at normal operating temperature, monitor the DRBIII
parameters related to the DTC while wiggling the wire harness. Look for parameter
values to change and/or a DTC to set.
Visually inspect the related wire harness. Look for any chafed, pierced, pinched,
partially broken wires and broken, bent, pushed out, or corroded terminals.
Inspect and clean all PCM, engine, and chassis grounds that related to the DTC set.
If numerous trouble codes were set, use a wire schematic to help you find any
common ground or supply circuits
For any Relay DTCs, actuate the Relay with the DRBIII and wiggle the related wire
harness to try to interrupt the actuation.
For intermittent Evaporative Emission trouble codes perform a visual and physical
inspection of the related parts including hoses and the Fuel Filler cap.
For intermittent Misfire DTCs check for restrictions in the Intake and Exhaust
system, improper installation of Sensors, vacuum leaks, and binding components
driven by the accessory drive belt.
A co-pilot, data recording, and/or lab scope should be used to help diagnose
intermittent conditions.
Use the DRBIII to perform a System Test if one applies to failing component.
Were any problems found during the above inspections?
Yes → Repair as necessary
No
POSSIBLE CAUSES
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 5.
→ Test Complete.
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APPLICABILITY
All