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 Descriptor
DTC B1529 00: Control Module Voltage Reference Output 5 CircuitDiagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
BCM B+ Terminal 3 | B1529 00, B3794 08, B3922 00 | B1529 00, B3794 08, B3922 00 | -- | -- |
BCM B+ Terminal 17 | B1529 00, B3794 08, B3922 00 | B1529 00, B3794 08, B3922 00 | -- | -- |
Circuit/System Description
The body control module (BCM) provides battery voltage to the cruise control switch and the automatic transmission shift lever.
Conditions for Running the DTC
| • | The ignition is ON. |
| • | The battery voltage is between 9 - 16 volts. |
Conditions for Setting the DTC
| • | The BCM detects a short to ground or an open on the B+ circuit. |
| • | The above condition is met for 5 seconds. |
Action Taken When the DTC Sets
The BCM stores the DTC information into memory when the diagnostic runs and fails.
Conditions for Clearing the DTC
| • | The condition for setting the DTC is no longer present. |
| • | A history DTC clears after 40 fault-free ignition cycles. |
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
Steering Wheel Controls Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Testing
- Ignition OFF, disconnect the X3 harness connector at the BCM.
- Verify that a test lamp illuminates between the BCM F9 fuse B+ circuit terminal 3 and ground.
- Ignition OFF, connect the X3 harness connector at the BCM.
- Disconnect the harness connector at the turn signal/multifunction switch.
- Ignition ON, test for B+ between the B+ circuit terminal 6 and ground.
- If all circuits test normal, test or replace the turn signal/multifunction switch.
| ⇒ | If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. |
| ⇒ | If less than the specified value, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM. |
Component Testing
- Ignition OFF, disconnect the harness connector at the steering wheel switch assembly.
- Test for 0.5-O.L. ohms between the scroll wheel terminals listed below, while rotating each steering wheel scroll wheel several times through its full range of motion.
- Test the resistance between the signal terminal 6 and the low reference terminal 5 while depressing the appropriate steering wheel controls switch button listed below.
| • | right steering wheel scroll wheel terminal 1 and terminal 2. |
| • | left steering wheel scroll wheel terminal 3 and terminal 4. |
| ⇒ | If not within the specified range or is erratic, replace the steering wheel switch. |
| ⇒ | If not the specified value, replace the steering wheel switch. |
Function Switch | Minimum Resistance Value | Maximum Resistance Value |
|---|---|---|
Mute | 98 Ohm | 104 Ohm |
Phone/Talk | 247 Ohm | 253 Ohm |
Disc Change | 426 Ohm | 434 Ohm |
Audio | 646 Ohm | 653 Ohm |
Trip | 975 Ohm | 983 Ohm |
Call End | 3.73k Ohm | 3.79k Ohm |
No Switch Pressed | 7.01k Ohm. | 7.30k Ohm. |
Repair Instructions
Perform the Diagnostic Repair Verification.
Control Module References for BCM replacement, setup, and programming
