PRE-RELEASE
DTC B1405
| DTC B1405 |
| 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 B1405 03
Control Module Voltage Reference Output 2 Circuit Low Voltage
DTC B1405 07
Control Module Voltage Reference Output 2 Circuit High Voltage
| Diagnostic Fault Information |
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
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Control Module Voltage Reference Output 2
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1
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B1405 03
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1. Open fuse
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| Circuit/System Description |
The body control module (BCM) monitors the system voltage to make sure that the voltage stays within the proper range. Damage to components and/or incorrect operation can occur when the voltage is out of range.
| Conditions for Running the DTC |
| • |
Battery voltage is between 9-16 V.
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The ignition is ON.
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| Conditions for Setting the DTC |
The BCM detects a low/high voltage on the control circuit.
| Conditions for Clearing the DTC |
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The condition responsible for setting the DTC no longer exists.
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A history DTC will clear once 100 consecutive malfunction free ignition cycles have occurred.
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| Reference Information |
Schematic Reference
Steering Wheel Secondary/Configurable Control Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Steering Wheel Controls 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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Scan Tool Reference
Control Module References
| Circuit/System Verification |
Run the engine and have the accessories off. Measure and register the battery voltage at the battery connections. The voltage should be between 12.6-15.0 V.
| Circuit/System Testing |
| 1. |
Ignition OFF, disconnect the X2 and the X1 harness connector at the K9 Body Control Module.
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| 2. |
Test for less than 5 Ω between the X2 harness connector ground circuit terminal 2 and ground.
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| 3. |
If greater than the specified range, test the ground circuit for an open/high resistance.
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| 4. |
Test for less than 5 Ω between the X1 harness connector ground circuit terminal 1 and ground.
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| 5. |
If greater than the specified range, test the ground circuit for an open/high resistance.
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| 6. |
Ignition ON, test for more than 11 V between the X2 harness connector terminal 1 and ground.
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| 7. |
If less than the specified value test the control circuit for an open/high resistance.
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| 8. |
If all circuits test normal, replace the K9 Body Control Module.
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| Repair Instructions |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for BCM replacement, programming, and setup
