Daytime Running Lamps (DRL) Inoperative, Headlamp Switch Operates Normally Day Light Conditions
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
DEFINITION: The front turn signal lamps do not come on in daylight conditions with DRL (Canada), or Automatic Lamp Control enabled (if equiped). The turn signal lamps operate normally using the turn signal lever. | ||||
1 | Has the Headlamp System Check been performed? | -- | Go to Headlight System Check | |
2 | Do the headlamps, and parking lamps turn on in low light conditions? | -- | ||
3 | Do the headlamps and parking lamps turn off in daylight conditions? | -- | ||
4 |
Are codes B0502, B0503, B0507, or B0508, displayed? | -- | Go to applicable DTC diagnostic in Body Control System | |
5 | Using the scan tool special functions, command the RH DRL relay on and off. Does the RH front turn signal lamp turn on when the RH DRL relay is on? | -- | ||
6 | Using the scan tool special functions, command the LH DRL relay on and off. Does the LH front turn signal lamp turn on when the LH DRL relay is on? | -- | Go to Headlight System Check | |
7 | Replace the RH DRL Micro Relay #38. Is the repair complete? | -- | Go to Headlight System Check | -- |
8 | Replace the LH DRL Micro Relay #40. Is the repair complete? | -- | Go to Headlight System Check | -- |
9 | Is the brake warning indicator always on? | -- | ||
10 |
Does the scan tool indicate the parking brake switch input off and on? | -- | ||
11 | Replace the BCM. Refer to Body Control Module Replacement Body Control Module (BCM) Programming/RPO Configuration . Is the repair complete? | -- | Go to Headlight System Check | -- |
12 |
Are codes B2647 or 2648 displayed? | -- | Go to applicable DTC diagnostic in Body Control System | |
13 | Replace the ambient light sensor. Refer to Daytime Running Lamp (DRL) Ambient Light Sensor Replacement . Is the repair complete? | -- | Go to Headlight System Check | -- |
Daytime Running Lamps (DRL) Inoperative, Headlamp Switch Operates Normally Low Light Conditions
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
DEFINITION: The headlamps, or parking lamps do not come on in low light conditions, with DRL (Canada), or Automatic Lamp Control enabled (if equipped). The headlamps, and parking lamps operate normally with the headlamp switch. | ||||
1 | Has the Headlamp System Check been performed? | -- | Go to Headlight System Check | |
2 | Do the turn signal lamps turn on in day light conditions? | -- | ||
3 | Do the turn signal lamps turn off in low light conditions? | -- | ||
4 |
Does the scan tool indicate the relay turning on and off? | -- | ||
5 | Do the headlamps turn on and off, with the scan tool indicating the ALC Headlamp Relay on and off? | -- | ||
6 | Using the scan tool command the ALC Parking Lamp Relay on and off. Does the scan tool indicate the relay turning on and off? | -- | ||
7 | Do the parking lamps turn on and off, with the scan tool indicating the ALC Parking Lamp Relay on and off? | -- | Go to Headlight System Check | |
8 |
Is the resistance within specified values? | 50-100 ohms | ||
9 | Inspect and repair the high resistance,or open condition in circuit 999, if ok replace the BCM. Refer to Body Control Module Replacement Body Control Module (BCM) Programming/RPO Configuration . Is the repair complete? | -- | Go to Headlight System Check | -- |
10 | Inspect and repair the high resistance, or open condition in circuit 103, if ok replace the ALC Headlamp Micro Relay #44. Is the repair complete? | -- | Go to Headlight System Check | -- |
11 |
Is the resistance within specified values? | 50-100 ohms | ||
12 | Inspect and repair the high resistance, or open condition in circuit 1784, if ok replace the BCM. Refer to Body Control Module Replacement Body Control Module (BCM) Programming/RPO Configuration . Is the repair complete? | -- | Go to Headlight System Check | -- |
13 | Inspect and repair the high resistance, or open condition in circuit 9, between the instrument panel electrical center connector C2 terminal E6 and splice S205, if ok replace the ALC Parking Lamp Micro Relay #43. Is the repair complete? | -- | Go to Headlight System Check | -- |
14 | Replace the ALC Headlamp Micro Relay #44. Is the repair complete? | -- | Go to Headlight System Check | -- |
15 | Replace the ALC Parking Lamp Micro Relay #43. Is the repair complete? | -- | Go to Headlight System Check | -- |
16 | Is the brake warning indicator always on? | -- | ||
17 |
Does the scan tool indicate the parking brake switch input off and on? | -- | ||
18 | Replace the BCM. Refer to Body Control Module Replacement Body Control Module (BCM) Programming/RPO Configuration . Is the repair complete? | -- | Go to Headlight System Check | -- |
19 | Replace the ambient light sensor. Refer to Daytime Running Lamp (DRL) Ambient Light Sensor Replacement . Is the repair complete? | -- | Go to Headlight System Check | -- |
