Chrysler Sebring, Stratus sedan, Sebring Convertible. Manual — part 84
Symptom:
*A/C SYSTEM TEST - MTC
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH THE PCM AND THE BCM
CHECK FOR HVAC RELATD DTCS IN THE PCM AND THE BCM
MONITOR THE DRBIII
t FOR HVAC DTCS
CHECK FOR HVAC RELATD DTCS IN THE PCM
MANUAL A/C SYSTEM TEST
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, attempt to communicate with the Powertrain Control Module.
With the DRBIII
t, attempt to communicate with the Body Control Module.
Was the DRBIII
t able to communicate with the PCM and the BCM?
All
Yes
→ Go To 2
No
→ Refer to the communication category for the related symptom.
Perform BODY VERIFICATION TEST - VER 1.
2
With the DRBIII
t, read Powertrain Computer DTC’s.
With the DRBIII
t, read Body Computer DTC’s.
Are any HVAC related DTCs present?
All
Yes
→ Refer to the appropriate catagory for the related symptom.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
3
Turn the ignition on.
Turn the Rear Defogger off.
Turn the Blend Control switch to the full cold position.
Turn the Mode Control switch to the Panel - Heater position.
Turn the Blower switch off.
With the DRBIII
t, record and erase Powertrain Computer DTC’s.
With the DRBIII
t, record and erase Body Computer DTCs.
Start the engine.
NOTE: Proceed directly to the conclusion of this test and answer Yes to the
question if the DRBIII
t displays any HVAC related DTC(s) while performing
anyone of the following steps.
Monitor the DRBIII
t for HVAC related DTCs in the Body Computer while perform-
ing the following.
Turn the Blower switch on.
With the DRBIII
t in Miscellaneous, actuate Calibrate HVAC Door Motors.
Slowly turn the Blend Control switch from full cold to full hot, then back to full cold.
Turn the Mode Control switch to each position, waiting 20 seconds in each position.
Press and release the Rear Defogger button, wait 20 seconds, then press and release
it again to turn the Rear Defogger off.
Does the DRBIII
t display any HVAC related Body Computer DTCs?
All
Yes
→ Return to the Symptom List and choose the code(s). If multiple
codes appear, repair any that relate to a short circuit first.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 4
321
HEATING & A/C
TEST
ACTION
APPLICABILITY
4
With the DRBIII
t, read PCM DTC’s.
Are any HVAC related DTCs present?
All
Yes
→ Refer to the appropriate catagory for the related symptom.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Recheck the climate control system performance. Refer to Service
Information for additional information.
Perform BODY VERIFICATION TEST - VER 1.
322
HEATING & A/C
*A/C SYSTEM TEST - MTC —
Continued
Symptom:
*ATC SYSTEM TEST
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH THE PCM, BCM, & ATC
CHECK FOR HVAC RELATD DTCS IN THE PCM & BCM
MONITOR THE DRBIII
t ACTIVE DTCS
CHECK FOR HVAC RELATD DTCS IN THE PCM
A/C SYSTEM TESTING
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, attempt to communicate with the Powertrain Control Module
(PCM).
With the DRBIII
t, attempt to communicate with the Body Control Module (BCM).
With the DRBIII
t, attempt to communicate with the Automatic Temperature Control
(ATC).
Was the DRBIII
t able to communicate with the PCM, BCM & ATC?
All
Yes
→ Go To 2
No
→ Refer to the communication category for the related symptom(s).
Perform BODY VERIFICATION TEST - VER 1.
2
With the DRBIII
t, read Powertrain Computer DTC’s.
With the DRBIII
t, read Body Computer DTC’s.
Are any HVAC related DTCs present?
All
Yes
→ Refer to the appropriate category for the related symptom(s).
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
3
Turn the ignition on.
With the DRBIII
t, record and erase the Body Computer DTC’s.
Start the engine.
NOTE: Monitor the DRBIII
t for active Body Computer DTCs while perform-
ing the following test steps. If a DTC appears during any test step, proceed
to the conclusion question.
NOTE: NOTE: If multiple DTCs appear, repair any that relate to a short
circuit first.
Slowly turn the blower control to each blower speed and leave it on HI speed.
Set the temperature to Lo. Wait 30 seconds before proceeding to the next step.
Set the temperature to Hi. Wait 30 seconds before proceeding to the next step.
Set the temperature to Lo. Wait 30 seconds before proceeding to the next step.
Push and then release each mode button (Auto; Off; A/C; Recirc; Panel; Floor; Mix;
Bilevel; EBL; & Defrost), waiting 30 seconds before pressing each button.
With the DRBIII
t in Miscellaneous, actuate Calibrate HVAC Door Motors. When
calibration is complete, read the Body Computer DTCs.
Slowly return the blower control to LO speed.
Does the DRBIII
t display any DTCs?
All
Yes
→ Return to the Symptom List and choose the symptom(s).
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 4
323
HEATING & A/C
TEST
ACTION
APPLICABILITY
4
With the DRBIII
t, read PCM DTC’s.
Are any HVAC related DTCs present?
All
Yes
→ Refer to the appropriate catagory for the related symptom(s).
Perform BODY VERIFICATION TEST - VER 1.
No
→ Recheck the climate control system performance. Refer to Service
Information for additional information.
Perform BODY VERIFICATION TEST - VER 1.
324
HEATING & A/C
*ATC SYSTEM TEST —
Continued
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