DTC B1445 |
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. |
DTC Descriptor |
Diagnostic Fault Information |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
Auxiliary Power Relay Switch B+ |
1 |
1 |
1 |
- |
Auxiliary Power Relay Control |
B1445 02 |
1 |
1 |
- |
Auxiliary Power Relay Ignition |
1 |
1 |
1 |
- |
Auxiliary Power Relay Ground |
- |
1 |
- |
- |
1. Retained Accessory Power Malfunction |
Circuit/System Description |
Conditions for Running the DTC |
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The system voltage is between 9-16 V. |
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The DTC can only set when the output is actively being requested by the module. Refer to Circuit/System Description for specific conditions. |
Conditions for Setting the DTC |
Action Taken When the DTC Sets |
Conditions for Clearing the DTC |
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The current DTC will clear when the malfunction is no longer present. |
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A history DTC clears when the module ignition cycle counter reaches the reset threshold of 50, without a repeat of the malfunction. |
Reference Information |
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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 Testing |
1. |
Ignition OFF, disconnect the KR70 auxiliary power relay. |
2. |
Test for less than 10 Ω between the control circuit and ground. |
3. |
If greater than the specified range, test the ground circuit for an open/high resistance. |
4. |
Connect a test lamp between the relay control circuit terminal 2 and ground. |
5. |
Cycle the ignition ON and OFF. The test lamp should turn ON and OFF when changing ignition switch positions. |
6. |
If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM. |
7. |
If the test lamp is always OFF, test the control circuit for a short to ground or open/high resistance. If the circuit tests normal, replace the K9 BCM. |
8. |
If all circuits test normal, test or replace the KR70 auxiliary power relay. |
Component Testing |
1. |
Ignition OFF, disconnect the KR70 auxiliary power relay. |
2. |
Test for 70 - 150 Ω between terminals control circuit terminal 2 and ground terminal 1. |
3. |
If not within the specified range, replace the KR70 auxiliary power relay. |
4. |
Test for infinite resistance between the following terminals: |
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1 and 3 |
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1 and 5 |
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2 and 3 |
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3 and 5 |
5. |
If not the specified value, replace the KR70 auxiliary power relay. |
6. |
Install a 3 A fused jumper wire between relay terminal 1 and 12 V. Install a jumper wire between relay terminal 2 and ground. Test for less than 2 Ω between terminals 3 and 5. |
7. |
If greater than the specified range, replace the KR70 auxiliary power relay. |
Repair Instructions |