For a full page schematic, refer to Exterior Lights Schematics .
Circuit Description
The SEO 1 15 A fuse in the engine wiring harness junction block supplies battery positive voltage to both the puddle lamp relay switch contacts and the puddle lamp coil circuit. When the driver or passenger door is opened the body control module (BCM) energizes the puddle lamp relay. Current flow is from the puddle lamp relay both outside rear view mirror puddle lamps. The puddle lamps are grounded through the courtesy lamps relay at G200 and G203.
Conditions for Running the DTC
| • | The system voltage must be between 9.0-16.0 volts. |
| • | The ignition switch in the OFF position. |
| • | Unlock doors from the remote control door lock key fob or open any door. |
| • | The above conditions must be met for more than 0.5 seconds. |
Conditions for Setting the DTC
| • | The puddle lamps ON. |
| • | The control circuit is shorted to battery voltage. |
| • | The above conditions must be met for 0.5 seconds. |
Action Taken When the DTC Sets
The puddle lamps will not function.
Conditions for Clearing the DTC
| • | This DTC will clear after a fault free puddle lamp operation. |
| • | A history DTC will clear after 100 consecutive ignition cycles without a fault present. |
| • | A clear codes message is sent by the scan tool. |
Diagnostic Aids
| Important: Use the appropriate probe from the J 35616 connector test adapter kit for any probing of the electrical components in this table, in order to avoid damage to the terminals. |
| • | Perform a visual inspection for loose or poor connections at all related components. |
| • | Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems. |
Test Description
The number(s) below refer to the step number(s) on the diagnostic table.
-
Listen for an audible click when the puddle lamp relay operates. Command both the ON and OFF states. Repeat the commands as necessary.
-
Tests for voltage at the coil side of the puddle lamp relay. The SEO1 fuse supplies power to the coil side of the puddle lamp relay.
-
Verifies that the body control module is providing ground to the puddle lamp relay.
-
Tests if ground is constantly being applied to the puddle lamp relay.
-
After replacement of the BCM you must calibrate the new module for proper operation.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the Lighting System Diagnostic System Check? | -- | Go to Step 2 | |
Does the puddle lamp relay turn ON and OFF with each command? | -- | Go to Diagnostic Aids | Go to Step 3 | |
Does the test lamp illuminate? | -- | Go to Step 4 | Go to Step 10 | |
Does the test lamp turn ON and OFF with each command? | -- | Go to Step 8 | Go to Step 5 | |
Does the test lamp remain illuminated with each command? | -- | Go to Step 7 | Go to Step 6 | |
6 | Test the control circuit of the puddle lamp relay for a short to voltage or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 9 |
7 | Test the control circuit of the puddle lamp relay for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 9 |
8 | Inspect for poor connections at the puddle lamp relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 11 |
9 | Inspect for poor connections at the harness connector of the body control module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 13 | Go to Step 12 |
10 | Repair the coil side feed circuit of the puddle lamp relay. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 13 | -- |
11 | Replace the puddle lamp relay. Did you complete the replacement? | -- | Go to Step 13 | -- |
|
Important: Perform the setup procedure for the body control module. Replace the body control module. Refer to Body Control Module Replacement in Body Control System. Did you complete the replacement? | -- | Go to Step 13 | -- | |
13 |
Does the DTC reset? | -- | Go to Step 2 | System OK |
