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 B0532: Left Turn Signal Circuit LowDTC B0533: Left Turn Signal Circuit High
DTC B0534: Left Turn Signal Circuit Open
Diagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Turn Signal/Multifunction Switch Signal | 2 | 2 | 2 | -- |
Left Turn Indicator Supply Voltage | B0525 00 | 1 | 1 | -- |
Right Turn Indicator Supply Voltage | B0530 00 | 1 | 1 | -- |
Left Turn Signal Control | B0532 00 | B0534 00 | B0533 00 | -- |
Right Turn Signal Control | B0527 00 | B0529 00 | B0528 00 | -- |
Front Park/Turn Signal Lamps Ground | -- | 1 | -- | -- |
Rear Park/Turn Signal Lamp Ground | -- | 1 | -- | -- |
Turn Signal/Multifunction Switch Ground | -- | 2 | -- | -- |
| ||||
Circuit/System Description
When the body control module (BCM) receives a left turn signal ON command from the turn signal switch, the BCM will apply voltage to the left rear stop/turn lamp control circuit and left turn signal lamps control circuit. The turn signal flasher is integrated within the BCM and will flash both circuits simultaneously.
Conditions for Running the DTC
Battery voltage must be between 9-16 volts.
Conditions for Setting the DTC
B0532
When the BCM receives a left turn signal command and the left front or rear turn lamp control circuit is shorted to ground.
B0533
When the BCM receives a left turn signal command and the left front or rear turn lamp control circuit is shorted to voltage.
B0534
When the BCM receives a left turn signal command and the left front or rear turn lamp control circuit is open.
Action Taken When the DTC Sets
The left front and/or left rear turn signals will not operate or will remain always on.
Conditions for Clearing the DTC
| • | This DTC will clear on current status after the condition for setting the fault is corrected. |
| • | A history DTC will clear after 100 consecutive ignition cycles without a fault present. |
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
Exterior Lighting Systems Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
Ignition ON, operate the left turn signal and verify that the left front and rear turn signals flash.
| ⇒ | If the left turn indicator does not illuminate or remains illuminated perform the Left Turn Signal Circuit Test. |
Circuit/System Testing
Left Turn Signal Circuit Test
- Ignition OFF, disconnect the harness connector at the affected turn signal bulb.
- Verify that a test lamp illuminates when connected between battery voltage to the listed ground circuit terminal.
- Connect a test lamp between the control circuit terminal A and the listed ground circuit terminal.
- Ignition ON, operate the left turn signal and verify that the test lamp flashes.
- If all circuits test normal, test or replace the bulb.
| • | Front terminal C |
| • | Rear terminal G |
| ⇒ | If the test lamp does not illuminate test the ground circuit for an open/high resistance. |
| • | Front terminal C |
| • | Rear terminal G |
| ⇒ | If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the BCM. |
| ⇒ | If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for BCM replacement, programming, and setup. |
