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B1445




Power Outlet Receptacle Malfunction - DTC B1445

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.

* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC B1445 02
- Control Module Voltage Output Circuit Short to Ground

Diagnostic Fault Information






Circuit/System Description

The BCM controls the wired power components by applying voltage to the ignition voltage circuit at harness connector X4 terminal 12. Voltage is applied when the vehicle power mode is Vehicle ON or Vehicle in Service Mode.

Conditions for Running the DTC

* The system voltage is between 9-16 V.

* The DTC can only set when the output is actively being requested by the module.

Conditions for Setting the DTC

The DTC will set only when the module requests the output and there is a short to ground in the ignition voltage circuit.

Action Taken When the DTC Sets

The module output driver will be shut down and not supply voltage to the circuit.

Conditions for Clearing the DTC

* The current DTC will clear when the malfunction is no longer present.

* A history DTC clears when the module power mode cycle counter reaches the reset threshold of 50, without a repeat of the malfunction.

Reference Information

Schematic Reference

Cigar Lighter/Power Outlet Schematics [1][2]Auxiliary Power Outlet

Connector End View Reference

Component Connector End Views Hybrid/EV Battery Pack X1

Description and Operation

Power Outlets Description and Operation Description and Operation

Electrical Information Reference

* Circuit Testing Circuit Testing

* Connector Repairs Connector Repairs

* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections

* Wiring Repairs Wiring Repairs

Circuit/System Verification

DTC B1445

1. Vehicle in Service Mode.

2. Verify that DTC B1445 is not set.

• If DTC B1445 is set
Refer to Circuit/System Testing

• If DTC B1445 is not set

3. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

4. Verify DTC B1445 does not set.

• If DTC B1445 sets
Refer to Circuit/System Testing

• If DTC B1445 does not set

5. All OK.

Power Outlet Receptacle Malfunction

1. Vehicle in Service Mode, connect an appropriate device to the X80 Accessory Power Receptacle and the E32 Cigarette Lighter Receptacle.

2. Verify the device is powered by the X80 Accessory Power Receptacle and by the E32 Cigarette Lighter Receptacle.

• If the device is not powered
Refer to Circuit/System Testing

• If the device is powered

3. All OK.

Circuit/System Testing

Power Outlet Receptacle Malfunction

1. Vehicle OFF, disconnect the harness connector at the appropriate X80 Accessory Power Receptacle and the E32 Cigarette Lighter Receptacle.

2. Test for less than 10 ohms between the ground circuit terminal C and ground.

• If greater than 10 ohms

1. Vehicle OFF.

2. Test for less than 2 ohms in the ground circuit end to end.

• If 2 ohms or greater, repair the open/high resistance in the circuit.

• If less than 2 ohms, repair the open/high resistance in the ground connection.

• If less than 10 ohms

3. Vehicle in Service Mode.

4. Verify that a test lamp illuminates between the control circuit terminal A and ground.

• If the test lamp does not illuminate and the circuit fuse is good

1. Vehicle OFF.

2. Test for less than 2 ohms in the control circuit end to end.

• If greater than 2 ohms, repair the open/high resistance in the circuit.

• If less than 2 ohms, verify the fuse is not open and there is voltage at the fuse. Refer to Retained Accessory Power Malfunction Retained Accessory Power Malfunction.

• If the test lamp does not illuminate and the circuit fuse is open

1. Vehicle OFF.

2. Test for infinite resistance between the control circuit terminal A and ground.

• If less than infinite resistance, repair the short to ground on the circuit.

• If infinite resistance, replace the appropriate X80 Accessory Power Receptacle or the E32 Cigarette Lighter Receptacle.

• If the test lamp illuminates

5. Replace the appropriate X80 Accessory Power Receptacle or the E32 Cigarette Lighter Receptacle.

DTC B1445

1. Vehicle OFF and all vehicle systems OFF, it may take up to 2 min for all vehicle systems to power down.

2. Disconnect the KR76 Retained Accessory Power Relay.

3. Test for less than 10 ohms between the ground circuit terminal 41 and ground.

• If 10 ohms or greater

1. Vehicle OFF.

2. Test for less than 2 ohms in the ground circuit end to end.

• If 2 ohms or greater, repair the open/high resistance in the ground circuit.

• If less than 10 ohms

4. Vehicle in Service Mode.

5. Verify the test lamp illuminates between the control circuit terminal 40 and ground.

• If the test lamp does not illuminate

1. Vehicle OFF, disconnect the harness connector at the K9 Body Control Module.

2. Test for infinite resistance between the control circuit terminal 12 X4 and ground.

• If less than infinite resistance, repair the short to ground on the circuit.

3. If infinite resistance, test for less than 2 ohms in the control circuit end to end.

• If less than 2 ohms

6. Test or replace the K9 Body Control Module.

Component Testing

Relay Test

1. Vehicle OFF.

2. Disconnect the KR76 Retained Accessory Power Relay.

3. Test for 60-180 ohms between terminals 40 and 41.

• If less than 60 ohms or greater than 180 ohms
Replace the KR76 Retained Accessory Power Relay.

4. Test for infinite resistance between the following terminals:

* 43 and 40

* 43 and 42

* 43 and 41

* 41 and 42

• If less than infinite resistance
Replace the KR76 Retained Accessory Power Relay.

• If infinite resistance

5. Install a 20 A fused jumper wire between relay terminal 40 and 12 V. Install a jumper wire between relay terminal 41 and ground.

6. Test for less than 2 ohms between terminals 42 and 43.

• If 2 ohms or greater
Replace the KR76 Retained Accessory Power Relay.

• If less than 2 ohms

7. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the repair.

* Accessory Power Receptacle Replacement Service and Repair

* Relay Replacement (Within an Electrical Center) Relay Replacement (Within an Electrical Center)Relay Replacement (Attached to Wire Harness) Relay Replacement (Attached to Wire Harness)

* Control Module References Programming and Relearning for BCM replacement, programming and setup.

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