LEMON Manuals: Even more car manuals for everyone
Home >> Chrysler >> 2001 >> Sebring LX, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 14 (Body Diagnostic Procedures - Except Coupe) >> Diagnostic Information And Procedures >> Heating & A/C >> Symptom: IN CAR TEMP SENSOR FAILURE (ATC ASPIRATOR FAILURE) >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC PROCEDURE - IN CAR TEMP SENSOR FAILURE

TEST ACTION APPLICABILITY
1 Turn the ignition on.
Completely cover the aspirator inlet (below the blower switch) with a piece of tissue paper.
NOTE: The tissue paper should hold in place, verifying that the aspirator motor is running.

Turn the ignition off.
Stay in the vehicle, close all doors and ensure that all lights are off.
Wait three minutes. Open and close the driver door and observe the aspirator motor.
The motor should run for approximately 60 seconds after the courtesy lamps have faded out and then stop.
Disconnect the Automatic Temperature Control harness connector.
Turn the ignition on.
Measure the voltage of the In-Car Temperature Sensor Signal circuit. The voltage should be between 4.5 volts and 5.2 volts.
Select the appropriate findings.
Aspirator motor inoperative
Go To 2
Aspirator timer inoperative
Go To 6
In-Car Temp Sense above 5.3 volts
Go To 8
In-Car Temp Sense below 4.5 volts
Go To 9
None of the above
Go To 12		 All
2 Turn the ignition off.
Disconnect the Automatic Temperature Control harness connector.
Turn the ignition on.
Measure the voltage between the Fused B(+) circuit and ground.
Is the voltage above 10.0 volts?
Yes --> Go To 3
No --> Repair the Fused B(+) circuit for an open.
Perform BODY VERIFICATION TEST - VER 1 .		 All
3 Turn the ignition off.
Disconnect the Automatic Temperature Control harness connector.
Disconnect the Body Control Module C1 harness connector.
Turn the ignition on.
Measure the voltage between the Aspirator Motor Driver circuit and ground.
Is the voltage above 0.2 volts?
Yes --> Repair the Aspirator Motor Driver circuit for a short to voltage.
Perform BODY VERIFICATION TEST - VER 1 .
No --> Go To 4		 All
4 Turn the ignition off.
Disconnect the Automatic Temperature Control harness connector.
Disconnect the Body Control Module C1 harness connector.
Measure the resistance of the Aspirator Motor Driver circuit between the BCM C1 connector and the ATC harness connector.
Is the resistance below 5.0 ohms?
Yes --> Go To 5
No --> Repair the Aspirator Motor Driver circuit for an open.
Perform BODY VERIFICATION TEST - VER 1 .		 All
5 Turn the ignition off.
Reconnect the Automatic Temperature Control harness connector.
Disconnect the Body Control Module C1 harness connector.
Connect a jumper wire between the Aspirator Motor Driver circuit and ground.
Turn the ignition on.
Check the operation of the aspirator motor fan.
Is the aspirator motor running?
Yes --> Replace and program the Body Control Module in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1 .
No --> Replace the Automatic Temperature Control in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1 .		 All
6
NOTE: Ensure that the courtesy lamps operate properly from the drivers door before proceeding. If not, refer to the INTERIOR LIGHTING CATEGORY  for the related symptom(s).
NOTE: This path is for the aspirator continuing to run with the key off and the doors closed.
Turn the ignition off.Disconnect the Body Control Module C1 harness connector.Turn the ignition on.Did the aspirator motor stop running?Yes --> Replace and program the Body Control Module in accordance with the Service Information.Perform BODY VERIFICATION TEST - VER 1 .No --> Go To 7		 All
7 Turn the ignition off.
Disconnect the Automatic Temperature Control harness connector.
Disconnect the Body Control Module C1 harness connector.
Measure the resistance between ground and the Aspirator Motor Driver circuit.
Is the resistance below 10K ohms?
Yes --> Repair the Aspirator Motor Driver circuit for a short to ground.
Perform BODY VERIFICATION TEST - VER 1 .
No --> Replace Automatic Temperature Control in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1 .		 All
8 Turn the ignition off.
Disconnect the Automatic Temperature Control harness connector.
Disconnect the Body Control Module C1 harness connector.
Turn the ignition on.
Measure the voltage between the In-Car Temperature Sensor Signal circuit and ground.
Is the voltage above 0.2 volts?
Yes --> Repair the In-Car Temperature Sensor Signal circuit for a short to voltage.
Perform BODY VERIFICATION TEST - VER 1 .
No --> Replace and program the Body Control Module in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1 .		 All
9 Turn the ignition off.
Disconnect the Body Control Module C1 harness connector.
Disconnect the Automatic Temperature Control harness connector.
Measure the resistance between ground and the In-Car Temperature Sensor Signal circuit.
Is the resistance below 10K ohms?
Yes --> Repair the In-Car Temperature Sensor Signal circuit for a short to ground.
Perform BODY VERIFICATION TEST - VER 1 .
No --> Go To 10		 All
10 Turn the ignition off.
Disconnect the Body Control Module C1 & C2 harness connectors.
Disconnect the Automatic Temperature Control harness connector.
Measure the resistance between the Sensor Ground circuit and the In-Car Temperature Sensor Signal circuit in the ATC harness connector.
Is the resistance below 10K ohms?
Yes --> Repair the In-Car Temperature Sensor Signal circuit for a short to the Sensor Ground circuit.
Perform BODY VERIFICATION TEST - VER 1 .
No --> Go To 11		 All
11 Turn the ignition off.
Disconnect the Body Control Module C1 harness connector.
Disconnect the Automatic Temperature Control harness connector.
Back probe one voltmeter lead to the In-Car Temperature Sensor Signal ckt in the BCM C1 harness connector and the other lead to ground.
Reconnect the BCM C1 and C2 harness connectors.
Turn the ignition on and observe the voltmeter.
Did the voltage go above 4.5 volts?
Yes --> Repair the In-Car Temperature Sensor Signal circuit for an open.
Perform BODY VERIFICATION TEST - VER 1 .
No --> Replace and program the Body Control Module in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1 .		 All
12 Turn the ignition off.
Disconnect the Automatic Temperature Control harness connector.
Close all doors and ensure that all lights are off.
Wait one minute to allow the BCM to go to sleep.
Measure the resistance between ground and the Sensor Ground circuit.
Is the resistance below 10.0 ohms?
Yes --> Go To 13
No --> Go To 14		 All
13 Turn the ignition off.
Reconnect the Automatic Temperature Control harness connector.
Turn the ignition on.
With the DRBIII®, erase Body Computer DTC's.
With the DRBIII®, read Body Computer DTC's.
Does the DRBIII® display: In-Car Temp Sensor Failure?
Yes --> Replace the Automatic Temperature Control in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1 .
No --> There is no problem found at this time. The aspirator and in-car temp sensor should be fully operational. Refer to appropriate SYSTEM WIRING DIAGRAMS article to help isolate a possible intermittent wiring problem.
Perform BODY VERIFICATION TEST - VER 1 .		 All
14 Turn the ignition off.
Disconnect the Body Control Module C2 harness connector.
Back probe one ohmmeter lead to the Sensor Ground ckt in the BCM C2 harness connector and the other lead to ground.
Reconnect the BCM C2 harness connector.
Close all doors and ensure that all lights are off.
Wait one minute to allow the BCM to go to sleep.
Measure the resistance between ground and the Sensor Ground circuit.
Is the resistance below 10.0 ohms?
Yes --> Repair the Sensor Ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1 .
No --> Replace and program the Body Control Module in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1 .		 All
scientia non olet · About LEMON Manuals