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Symptom:
ORC, NO CLUSTER MESSAGE - ACTIVE
When Monitored and Set Condition:
ORC, NO CLUSTER MESSAGE - ACTIVE
When Monitored: With the ignition in the On position, the ORC monitors the PCI Bus for
a message from the MIC containing the airbag warning lamp status. The MIC transmits
the message one time at ignition on, lamp state change, or in response to the ORC lamp
message.
Set Condition: If the MIC message is not received for 10 consecutive seconds, the code
will set.
POSSIBLE CAUSES
MIC, COMMUNICATION FAILURE
NO CLUSTER MESSAGES
ORC, NO CLUSTER MESSAGES
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, ensure PCI Bus communications with the Instrument Cluster.
Is the Instrument Cluster communicating on the PCI Bus?All
Ye s®Go To 2
No®Refer to category COMMUNICATION CATEGORY and select the
related symptom INSTRUMENT CLUSTER BUS +/- SIGNAL
OPEN.
Perform AIRBAG VERIFICATION TEST - VER 1.
2 With the DRB select PASSIVE RESTRAINTS, AIRBAG, MONITOR DISPLAY and
WARNING LAMP STATUS.
Cycle the ignition key and observe the LAMP ON BY MIC monitor after the 6 to 8
seconds bulb check.
Does the DRB show LAMP ON BY MIC: ON or OFF?All
YES
Go To 3
NO
Replace Instrument Cluster circuit board.
Perform BODY VERIFICATION TEST - VER 1.
126
AIRBAG
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Symptom List:
AC PRESSURE TOO HIGH (STORED)
AC PRESSURE TOO LOW (STORED)
DRIVER BLEND DOOR NOT RESPONDING (STORED)
DRIVER BLEND DOOR RANGE TOO LARGE (STORED)
DRIVER BLEND DOOR TRAVEL TOO SMALL (STORED)
FRONT IR SENSOR AND CONTROL HEAD MISMATCH (STORED)
FRONT IR SENSOR CHANGE TOO LARGE (STORED)
FRONT IR SENSOR HIGH (STORED)
FRONT IR SENSOR LOW (STORED)
FRONT IR SENSOR NOT CALIBRATED (STORED)
FRONT KEYBOARD COMMUNICATION FAULT (STORED)
FRONT KEYBOARD FAULT (STORED)
FRONT MODE DOOR NOT RESPONDING (STORED)
FRONT MODE DOOR TRAVEL TOO LARGE (STORED)
FRONT MODE DOOR TRAVEL TOO SMALL (STORED)
PASS BLEND DOOR NOT RESPONDING (STORED)
PASS BLEND DOOR TRAVEL TOO LARGE (STORED)
PASS BLEND DOOR TRAVEL TOO SMALL (STORED)
PCI BUS SHORTED HIGH (STORED)
PCI BUS SHORTED LOW (STORED)
REAR BLEND DOOR NOT RESPONDING (STORED)
REAR BLEND DOOR RANGE TOO LARGE (STORED)
REAR BLEND DOOR TRAVEL TOO SMALL (STORED)
REAR FAN POT OPEN (STORED)
REAR FAN POT SHORTED (STORED)
REAR IR SENSOR HIGH (STORED)
REAR IR SENSOR LOW (STORED)
REAR IR SENSOR NOT CALIBRATED (STORED)
REAR KEYBOARD FAULT (STORED)
REAR MODE DOOR NOT RESPONDING (STORED)
REAR MODE DOOR TRAVEL TOO LARGE (STORED)
REAR MODE DOOR TRAVEL TOO SMALL (STORED)
REAR MODE POT OPEN (STORED)
REAR MODE POT SHORTED (STORED)
RECIRC DOOR NOT RESPONDING (STORED)
RECIRC DOOR TRAVEL TOO LARGE (STORED)
RECIRC DOOR TRAVEL TOO SMALL (STORED)
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be AC PRESSURE TOO HIGH
(STORED).
When Monitored and Set Condition:
226
AUTOMATIC TEMPERATURE CONTROL
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Symptom List:
FRONT IR SENSOR NOT CALIBRATED (ACTIVE)
FRONT KEYBOARD FAULT (ACTIVE)
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be FRONT IR SENSOR NOT
CALIBRATED (ACTIVE).
When Monitored and Set Condition:
FRONT IR SENSOR NOT CALIBRATED (ACTIVE)
When Monitored: With the ignition on and the IOD fuse installed.
Set Condition: This DTC is set if the ATC cannot read the IR sensor values or the IR
sensor values are not within a defined range of the HVAC air door motor counts.
POSSIBLE CAUSES
ATC - PROTECTED IGNITION CIRCUIT FAULT
KDB 2 CLOCK CIRCUIT SHORTED TO VOLTAGE
KDB 2 DATA CIRCUIT SHORTED TO GROUND
KDB 2 DATA CIRCUIT SHORTED TO VOLTAGE
PROTECTED IGNITION CIRCUIT OPEN
SENSOR RETURN CIRCUIT OPEN
KDB 2 CLOCK CIRCUIT SHORTED TO GROUND
KDB 2 DATA CIRCUIT OPEN
ATC - KDB 2 DATA CIRCUIT FAULT
ATC - SENSOR RETURN CIRCUIT FAULT
KDB 2 CLOCK CIRCUIT OPEN
ATC - KDB 2 CLOCK CIRCUIT FAULT
ATC REMOTE SENSOR
TEST ACTION APPLICABILITY
1 Turn the ignition off.
Disconnect the ATC Remote Sensor harness connector.
Turn the ignition on.
Measure the voltage of the Protected Ignition circuit.
Is the voltage above 10.0 volts?All
Ye s®Go To 2
No®Go To 16
246
AUTOMATIC TEMPERATURE CONTROL
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Symptom:
FRONT KEYBOARD COMMUNICATION FAULT (ACTIVE)
POSSIBLE CAUSES
AT C
TEST ACTION APPLICABILITY
1 This DTC indicates a fault in the ATC.
View repair.All
Repair
Replace the ATC.
With the DRBIIIt, reset the ATC after repair/replacement is
complete.
Perform BODY VERIFICATION TEST - VER 1.
251
AUTOMATIC TEMPERATURE CONTROL
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Symptom:
REAR KEYBOARD FAULT (ACTIVE)
POSSIBLE CAUSES
BCM
IGNITION SWITCH (RUN) CIRCUIT OPEN
KDB CLOCK CIRCUIT SHORTED TO VOLTAGE
KDB DATA CIRCUIT SHORTED TO GROUND
KDB DATA CIRCUIT SHORTED TO VOLTAGE
KDB CLOCK CIRCUIT SHORTED TO GROUND
KDB DATA CIRCUIT OPEN
ATC - KDB DATA CIRCUIT FAULT
KDB CLOCK CIRCUIT OPEN
ATC - KDB CLOCK CIRCUIT FAULT
REAR ATC SWITCH GROUND CIRCUIT OPEN
REAR AUTOMATIC TEMPERATURE CONTROL SWITCH
TEST ACTION APPLICABILITY
1 Turn the ignition off.
Disconnect the Rear Automatic Temperature Control Switch harness connector.
Measure the resistance of the Rear ATC Switch Ground circuit.
Is the resistance below 5.0 ohms?All
Ye s®Go To 2
No®Repair the Rear ATC Switch Ground circuit for an open.
With the DRBIIIt, reset the ATC after repair/replacement is
complete.
Perform BODY VERIFICATION TEST - VER 1.
2 Turn the ignition off.
Disconnect the Rear Automatic Temperature Control Switch harness connector.
Turn the ignition on.
Measure the voltage of the Ignition Switch (Run) circuit.
Is the voltage above 10.0 volts?All
Ye s®Go To 3
No®Go To 14
3 Turn the ignition off.
Disconnect the Rear Automatic Temperature Control Switch harness connector.
Turn the ignition on.
Measure the voltage of the KDB Data circuit.
Is the voltage above 10.0 volts?All
Ye s®Go To 4
No®Go To 11
280
AUTOMATIC TEMPERATURE CONTROL
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TEST ACTION APPLICABILITY
4 Turn the ignition off.
Disconnect the Rear Automatic Temperature Control Switch harness connector.
Disconnect the ATC C2 harness connector.
Turn the ignition on.
Measure the voltage of the KDB Data circuit.
Is the voltage above 1.0 volt?All
Ye s®Repair the KDB Data circuit for a short to voltage.
With the DRBIIIt, reset the ATC after repair/replacement is
complete.
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 5
5 Turn the ignition off.
Disconnect the Rear Automatic Temperature Control Switch harness connector.
Use Scope input cable CH7058, Cable to Probe adapter CH7062, and the red and
black test probes.
Connect the scope input cable to the channel one connector on the DRB. Attach the
red and black leads and the cable to probe adapter to the scope input cable.
Select Lab Scope.
Select Live.
Select 12 volt square wave.
Press F2 for Scope.
Press F2 and use the arrows to set the voltage range to 20 volts, the Offset to 4.0, and
the Probe to x10. Press F2 again and set the divisions to 40ms/Div, then press F2
again when complete.
Connect the Black lead to the chassis ground. Connect the Red lead to the KDB Clock
circuit in the Rear Automatic Temperature Control Switch harness connector.
Turn the ignition on.
Observe the voltage display on the DRB Lab Scope.
NOTE: The lab scope pattern should look similar to the example given in the
support material and cycle from approximately 0 volts to 8.0 volts.
Did the lab scope pattern and voltage react as noted above?All
Ye s®Go To 6
No®Go To 7
6 If there are no possible causes remaining, view repair. All
Repair
Replace the Rear Automatic Temperature Control Switch.
With the DRBIIIt, reset the ATC after repair/replacement is
complete.
Perform BODY VERIFICATION TEST - VER 1.
7 Turn the ignition off.
Disconnect the Rear Automatic Temperature Control Switch harness connector.
Disconnect the ATC C2 harness connector.
Turn the ignition on.
Measure the voltage of the KDB Clock circuit.
Is the voltage above 1.0 volt?All
Ye s®Repair the KDB Clock circuit for a short to voltage.
With the DRBIIIt, reset the ATC after repair/replacement is
complete.
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 8
281
AUTOMATIC TEMPERATURE CONTROL
REAR KEYBOARD FAULT (ACTIVE) ÐContinued
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TEST ACTION APPLICABILITY
8 Turn the ignition off.
Disconnect the Rear Automatic Temperature Control Switch harness connector.
Disconnect the ATC C2 harness connector.
Measure the resistance between ground and the KDB Clock circuit.
Is the resistance above 100k ohms?All
Ye s®Go To 9
No®Repair the KDB Clock circuit for a short to ground.
With the DRBIIIt, reset the ATC after repair/replacement is
complete.
Perform BODY VERIFICATION TEST - VER 1.
9 Turn the ignition off.
Disconnect the Rear Automatic Temperature Control Switch harness connector.
Disconnect the ATC C2 harness connector.
Measure the resistance of the KDB Clock circuit.
Is the resistance below 5.0 ohms?All
Ye s®Go To 10
No®Repair the KDB Clock circuit for an open.
With the DRBIIIt, reset the ATC after repair/replacement is
complete.
Perform BODY VERIFICATION TEST - VER 1.
10 If there are no possible causes remaining, view repair. All
Repair
Replace the ATC.
With the DRBIIIt, reset the ATC after repair/replacement is
complete.
Perform BODY VERIFICATION TEST - VER 1.
11 Turn the ignition off.
Disconnect the Rear Automatic Temperature Control Switch harness connector.
Disconnect the ATC C2 harness connector.
Measure the resistance between ground and the KDB Data circuit.
Is the resistance above 100k ohms?All
Ye s®Go To 12
No®Repair the KDB Data circuit for a short to ground.
With the DRBIIIt, reset the ATC after repair/replacement is
complete.
Perform BODY VERIFICATION TEST - VER 1.
12 Turn the ignition off.
Disconnect the Rear Automatic Temperature Control Switch harness connector.
Disconnect the ATC C2 harness connector.
Measure the resistance of the KDB Data circuit.
Is the resistance below 5.0 ohms?All
Ye s®Go To 13
No®Repair the KDB Data circuit for an open.
With the DRBIIIt, reset the ATC after repair/replacement is
complete.
Perform BODY VERIFICATION TEST - VER 1.
282
AUTOMATIC TEMPERATURE CONTROL
REAR KEYBOARD FAULT (ACTIVE) ÐContinued
Page 312 of 4284
TEST ACTION APPLICABILITY
13 If there are no possible causes remaining, view repair. All
Repair
Replace the ATC.
With the DRBIIIt, reset the ATC after repair/replacement is
complete.
Perform BODY VERIFICATION TEST - VER 1.
14 Turn the ignition off.
Disconnect the Rear Automatic Temperature Control Switch harness connector.
Disconnect the BCM C4 harness connector.
Measure the resistance of the Ignition Switch (Run) circuit.
Is the resistance below 5.0 ohms?All
Ye s®Replace the BCM.
With the DRBIIIt, reset the ATC after repair/replacement is
complete.
Perform BODY VERIFICATION TEST - VER 1.
No®Repair the Ignition Switch (Run) circuit for an open.
With the DRBIIIt, reset the ATC after repair/replacement is
complete.
Perform BODY VERIFICATION TEST - VER 1.
283
AUTOMATIC TEMPERATURE CONTROL
REAR KEYBOARD FAULT (ACTIVE) ÐContinued