PRE-RELEASE
DTC 30-32
| DTC 30-32 |
| Diagnostic Instructions |
| • |
Perform the
Diagnostic System Check - Vehicle
prior to using this diagnostic procedure.
|
|
| • |
Review
Strategy Based Diagnosis
for an overview of the diagnostic approach.
|
|
| • |
Diagnostic Procedure Instructions
provides an overview of each diagnostic category.
|
|
| DTC Descriptors |
DTC 30
Parking Heater Blower Motor Speed Out of Tolerance
DTC 31
Parking Heater Blower Motor Circuit Open
DTC 32
Parking Heater Blower Motor Circuit Low or Circuit High
| Diagnostic Fault Information |
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|
Parking Heater Blower Motor Supply Voltage
|
32
|
31
|
32
|
30
|
|
Parking Heater Blower Motor Ground
|
-
|
31
|
32
|
30
|
| Circuit/System Description |
The parking heater uses a parking heater blower motor to supply oxygen onto the combustion chamber so the air fuel mixture will ignite when the glow plug is activated.
| Conditions for Running the DTC |
Ignition OFF. Battery voltage must be between 10-15 V.
| Conditions for Setting the DTC |
parking heater has recognized out of range condition for more than 2.5 s.
| 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
| • |
Circuit Testing
|
|
| • |
Connector Repairs
|
|
| • |
Testing for Intermittent Conditions and Poor Connections
|
|
| • |
Wiring Repairs
|
|
| 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.
| Component Testing |
Dynamic Test
| 1. |
Ignition OFF, separate the K87 Parking Heater Control Module from the X150 Parking Heater Harness & Parking Heater Assembly Harness.
|
|
| 2. |
Ignition OFF, test for less than 5 Ω between the low reference circuit terminal and ground.
|
|
| 3. |
If greater than the specified range, replace the X150 Parking Heater Harness & Parking Heater Assembly Harness.
|
|
| 4. |
Connect a 8.2 V maximum regulated voltage supply between the 14 pin connector terminal 14 to the heater assembly and the heater control module terminal 13 to the heater assembly.
|
|
| 5. |
If the blower motor fan speed is less than 1 000 RPM, replace the M94 Parking Heater Blower Motor.
|
|
| 6. |
If the M94 Parking Heater Blower Motor tests normal, replace the K87 Parking Heater Control Module.
|
|
| Repair Instructions |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
