PRE-RELEASE
DTC 90 or 92-103
| DTC 90 or 92-103 |
| Diagnostic Instructions |
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Perform the
Diagnostic System Check - Vehicle
prior to using this diagnostic procedure.
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Review
Strategy Based Diagnosis
for an overview of the diagnostic approach
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Diagnostic Procedure Instructions
provides an overview of each diagnostic category
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| DTC Descriptor |
DTC 090, 092-103
Parking Heater Controller Defect
| Circuit/System Description |
The internal fault detection is handle inside the control module. No external circuits are involved.
| Conditions for Running the DTC |
The module runs the program to detect an internal fault when power up is commanded. The only requirements are voltage and ground.
| Conditions for Setting the DTC |
The parking heater has detected an internal malfunction.
| Action Taken When the DTC Sets |
The parking heater will lock.
| Conditions for Clearing the DTC |
DTC must be cleared with the remote control.
| Reference Information |
Schematic Reference
HVAC Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Fuel Operated Heater Description and Operation
Electrical Information Reference
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Circuit Testing
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Connector Repairs
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Testing for Intermittent Conditions and Poor Connections
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Wiring Repairs
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| Circuit/System Verification |
Ignition OFF, command the parking heater ON and OFF with the remote control. Verify the parking heater turns ON and OFF with no DTCs.
| Circuit/System Testing |
| 1. |
Attempt to clear the DTC with the remote control.
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| 2. |
If the DTC does not clear, replace the K87 Parking Heater Control Module.
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| Repair Instructions |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Independent Heater
