Chrysler 300M 2002 Service Manual page 2470

P0070-AMBIENT TEMP SENSOR STUCK —
TEST
8 Turn the ignition off.
Disconnect the Ambient Temperature Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between the Ambient Temperature Sensor Signal circuit and
the Sensor ground circuit in the Ambient Temperature Sensor harness connector.
Is the resistance below 100 ohms?
Yes → Repair the short to the Sensor ground in the Ambient Tempera-
No
9 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.
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.
Review the DRBIII Freeze Frame information to identify under what conditions the
DTC set.
Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wire harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wire harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Were any of the above conditions present?
Yes → Repair as necessary.
No
ACTION
ture Sensor Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
→ NOTE: Before continuing, check the PCM harness connector
terminals for corrosion, damage or terminal push out. Repair as
necessary. Replace and program the Powertrain Control Module
in accordance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
→ Test Complete.
DRIVEABILITY - NGC
Continued
41
APPLICABILITY
All
All