DTC B3622
DTC B3622 |
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 B3622 07
Steering Wheel Controls Signal Circuit High Voltage
Diagnostic Fault Information |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
12V Reference | B1529 03, B1405 03 | 1 | B1529 07 | B1529 07 |
Steering Wheel Control Switch Signal | 1 | 1 | B3622 07 | - |
1. Steering Wheel Controls Inoperative |
Circuit/System Description |
The body control module (BCM) monitors the steering wheel control signal circuit voltage. If the voltage level is too high, damage may result in the system. When a high voltage condition is detected, the BCM will ignore the switch command.
Conditions for Running the DTC |
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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 short to voltage in the steering wheel control switch signal circuit.
Action Taken When the DTC Sets |
The BCM will ignore switch inputs.
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 for scan tool information
Circuit/System Testing |
1. |
Ignition OFF, disconnect the S70R Steering Wheel Controls Switch - Right.
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2. |
Ignition ON, test for greater than 11 V between the voltage reference circuit terminal 1 and ground.
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3. |
If less than the specified value, test the voltage reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 body control module.
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4. |
Test for greater than 11 V between the voltage reference circuit terminal 1 and the signal circuit terminal 2.
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5. |
If less than the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K9 body control module.
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6. |
Ignition OFF, disconnect the X3 harness connector at the K9 Body Control Module.
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7. |
Test for infinite resistance between the signal circuit terminal 2 at the S70R Steering Wheel Controls Switch - Right and ground.
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8. |
If less than the specified value, test the signal circuit for a short to ground.
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9. |
If all circuits test normal, test or replace the S70R Steering Wheel Controls Switch - Right.
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Repair Instructions |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for BCM replacement, setup, and programming