Chrysler Concorde 2004 Service Manual page 705

P0070-AMBIENT TEMP SENSOR STUCK —
TEST
1 Ignition on, engine not running.
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
No
2 NOTE: Visually inspect both the component and the PCM connectors. Look
for damage, partially broken wires and backed out or corroded terminals
Turn the ignition off.
Disconnect the Ambient Air Temp Sensor harness connector.
Ignition on, engine not running.
Measure the voltage of the (K25) AAT Signal circuit in the Ambient Air Temperature
Sensor harness connector.
Is the voltage above 5.2 volts?
Yes → Repair the short to battery voltage in the (K25) AAT Signal
No
3 Turn the ignition off.
Disconnect the Ambient Air Temperature Sensor harness connector.
Ignition on, engine not running.
With the DRBIII , read the Ambient Air Temperature Sensor voltage.
Is the voltage above 4.9 volts?
Yes → Go To 4
No
4 Turn the ignition off.
Disconnect the Ambient Air Temperature Sensor harness connector.
Using a jumper wire, jumper across the Ambient Air Temperature Sensor harness
connector.
Ignition on, engine not running.
With the DRBIII , read the Ambient Air Temperature voltage.
Is the voltage below 1.0 volt?
Yes → Replace the Ambient Air Temperature Sensor.
No
ACTION
→ Refer to the INTERMITTENT CONDITION symptom in the
Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
→ Go To 3
→ Go To 7
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
→ Go To 5
DRIVEABILITY - NGC
Continued
47
APPLICABILITY
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