Dodge Ram 2004 Service Manual page 400

HEATING & A/C
COOLDOWN TEST TOO COLD TO START —
TEST
7 NOTE: Ensure that the Evaporator Temperature Sensor harness connector
is connected to the Evaporator Temperature Sensor.
NOTE: Ensure the voltmeter leads meet the terminals in the connector and
that there is good terminal to wire connection.
NOTE: Ensure the voltmeter leads are connected for positive polarity
Back probe the Evaporator Temperature Sensor Signal circuit between the Evapo-
rator Temperature Sensor harness connector and the A/C - Heater Control Module C1
harness connector.
Turn the ignition on.
Is the voltage below 0.10 volt?
Yes → Replace the A/C - Heater Control Module in accordance with the
→ Repair the high resistance in the Evaporator Temperature Sensor
No
ACTION
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
Signal circuit. After the repair is complete, start the engine. Set
the blower control to high speed. With the DRBIII , actuate the
Cooldown Test.
Perform BODY VERIFICATION TEST - VER 1.
Continued
386
APPLICABILITY
All