TEST
ACTION
APPLICABILITY
6
Turn the ignition off.
Disconnect the O2 Sensor harness connector.
Measure the resistance between the O2 Sensor Signal circuit and the Heater ground
circuit in the O2 Sensor harness connector.
Is the resistance below 100 ohms?
All
Yes
→
Repair the O2 Sensor Signal circuit for a short to the Heater
ground circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
Go To
7
7
If there are no possible causes remaining, view repair.
All
Repair
Replace the Powertrain Control Module.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
8
WARNING: KEEP CLEAR OF THE ENGINE’S MOVING PARTS.
NOTE: The conditions that set the DTC are not present at this time. The
following list may help in identifying the intermittent condition.
With the engine running at normal operating temperature, monitor the DRB
parameters related to the DTC while wiggling the wiring harness. Look for param-
eter values to change and/or a DTC to set.
Review the DRB Freeze Frame information. If possible, try to duplicate the
conditions under which the DTC was set.
Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Were any of the above conditions present?
All
Yes
→
Repair as necessary
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
Test Complete.
73
DRIVEABILITY - GAS
P0131-1/1 O2 SENSOR SHORTED TO GROUND —
Continued