Dodge Caliber. Manual — part 1029
B10B7 - CABIN HEATER 2 CONTROL CIRCUIT
For a complete wiring diagram Refer to Section 8W
•
When Monitored:
With the ignition on.
•
Set Condition:
A Cabin Heater (PTC) #2 error message has been received over the CAN bus from the Totally Integrated
Power Module.
Possible Causes
INTERMITTENT DTC
DTC SET IN TOTALLY INTEGRATED POWER MODULE (TIPM)
ENGINE CONTROL MODULE (ECM)
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
Diagnostic Test
1.
DTC IS ACTIVE
NOTE: This DTC will set if the Engine Control Module (ECM) receives a message from the Totally Integrated
Power Module indicating that a PTC Heater Relay DTC is present.
Ignition on, engine not running.
With the scan tool, Clear DTCs in the Engine Control Module (ECM).
With the scan tool, actuate the PTC Heater Relay 2.
With the scan tool, select View DTCs.
Is the status Active for this DTC?
Yes
>> Go To 2
No
>> Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
2.
ENGINE CONTROL MODULE (ECM)
With the scan tool, select View DTCs in the Totally Integrated Power Module.
Is there a stored or active PTC Heater Relay DTC present in the Totally Integrated Power Module?
Yes
>> Refer to 24 - HVAC — ELECTRICAL DIAGNOSTICS for diagnostic procedures and for further possible
causes.
No
>> Replace the Engine Control Module (ECM) in accordance with the Service Information.
Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)
PM
ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
9 - 1403
B1C32- AIRBAG DEPLOYMENT DETECTED
•
When Monitored:
With the ignition on.
•
Set Condition:
The ACM sends a CAN Bus message to the ECM indicating that the airbags have been deployed.
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.
Diagnostic Test
1.
DTC EXPLANATION
NOTE: This DTC indicates that the vehicle has been in an accident and the airbag module has deployed the
airbags.
View Repair.
Yes
>>
Test Complete.
9 - 1404
ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
PM
B2189-IGNITION START CONTROL CIRCUIT HIGH
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With the ignition on.
•
Set Condition:
The TIPM detects a short to voltage condition in the Fused Ignition Switch Output (Start) circuit.
Possible Causes
FUSED IGNITION SWITCH OUTPUT (START) CIRCUIT SHORT TO VOLTAGE
ENGINE CONTROL MODULE
TIPM
Diagnostic Test
1.
CHECK FOR ACTIVE DTC
With the scan tool, read the active DTC’s.
Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 10 seconds.
With the scan tool, read the active DTC’s.
Does the scan tool display this DTC as active?
Yes
>> Go To 2
No
>> If the DTC is stored, check for an intermittent condition. Using the wiring diagram/schematic as a guide,
visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded
terminals.
2.
ENGINE CONTROL MODULE
Turn the ignition off.
Disconnect the Engine Control Module harness connectors.
Turn the ignition on, wait 10 seconds.
With the scan tool, read TIPM DTCs.
Did DTC B2188-IGNITION START CONTROL CIRCUIT HIGH change from active to stored?
Yes
>> Replace the Engine Control Module in accordance with the service information.
No
>> Check the Fused Ignition Switch Output (START) circuit for a short to voltage. If this circuit is not
shorted to voltage, replace the TIPM.
PM
ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
9 - 1405
U0002–CAN C BUS OFF PERFORMANCE
For a complete wiring diagram Refer to Section 8W
Possible Causes
INTERMITTENT DTC
CAN BUS OPEN OR SHORTED CONDITION
TOTALLY INTEGRATED POWER MODULE (TIPM)
ENGINE CONTROL MODULE (ECM)
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
Diagnostic Test
1.
DTC IS ACTIVE
Ignition on, engine not running.
With the scan tool, Clear DTCs in the Engine Control Module (ECM).
Monitor the scan tool for at least two minutes.
Cycle the ignition key off and on several times, leaving the ignition on for at least 10 seconds at a time.
Start the engine.
Allow the engine to reach normal operating temperature.
With the scan tool, select View DTCs.
Is the status Active for this DTC?
Yes
>> Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING for diag-
nostic procedures and for further possible causes.
No
>> Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
9 - 1406
ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
PM
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