Chrysler 300M 1999 Manual page 127

TEST 1B
IDENTIFYING CLIMATE CONTROL TROUBLE CODES
Perform TEST 1A Before Proceeding
1. Record and erase the trouble code(s).
2. Set the ATC at 75°, start the engine, and using the DRB select ''Body Computer'' ''Read
DTCs)''.
If no code appears, slowly run the ATC control from 65° to 85°, then back to 65° while looking
for BCM codes. If a code appears, perform the indicated test from the list below.
If a code still does not appear, continue by running the ATC control from 60° to 90°, then back
to 60°. Push each mode and temp button in turn, waiting 30 seconds between each one. Upon
seeing the first code appear, erase the code and perform the indicated test from the list below.
3. If no codes appear following the steps above, recalibrate the doors by pressing and holding the
floor, floor and defrost, and the defrost buttons at the same time until the display starts to flash.
Observe the DRB for codes. When the first code appears, erase the code and perform the
indicates test from the list below.
NOTE: If multiple codes appear, repair any that relate to a short circuit first. If a short to battery code
is set, all 4 ''Output Shorted to Battery'' codes will appear. It will then be necessary to isolate each
circuit to determine which circuit is at fault.
4. If no codes are seen, observe the climate system performance, then continue TEST 1A.
DIAGNOSTIC TROUBLE CODE (DTC)
Ambient Temperature Sensor Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .''OTIS'' Test 2A
ATC Messages Not Received . . . . . . . . . . . . . . . . . . . . . . . . . . .''Vehicle Communication'' Test 3A
ATC Switch Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Test 2A
Blend Door Feedback Failure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Test 3A
Blend Door Output Shorted to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Test 4A
Blend Door Output Shorted to Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Test 5A
Blend Door Stall Test Failed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Test 3A
Common Output Shorted to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Test 6A
Common Output Shorted to Battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Test 5A
Evaporator Temperature Sensor Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Test 7A
In-Car Temperature Sensor Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Test 8A
Mode Door Feedback Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Test 9A
Mode Door Output Shorted to Ground. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Test 10A
Mode Door Output Shorted to Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Test 5A
Mode Door Stall Test Failed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Test 9A
Recirculation Door Output Shorted to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Test 11A
Recirculation Door Output Shorted to Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Test 5A
Recirculation Door Test Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Test 12A
NOTE: If this code appears along with any other codes(s), repair the other code(s) first.
Sun Load Sensor Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Test 13A
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