|
STATES |
DETAILS/RESULTS/ACTIONS |
|
A1: CHECK THE LOW BEAM HEADLIGHTS |
|
|
1Enter the ON position. |
|
|
2Turn the light switch to the "LOW BEAM" position. |
|
|
3Check the low beam headlights. |
|
|
• Are the low beam headlights on? |
|
|
→ Yes |
|
|
Go to A2 |
|
|
→ No |
|
|
For additional information, see Section 417-01. |
|
|
A2: CHECK POWER SUPPLY TO DAYTIME RUNNING LIGHT (DRL) RELAY |
|
|
1Enter the OFF position. |
|
|
2Disconnect Daytime Running Light (DRL) Relay - C1012. |
|
|
3Measure the voltage between pin 3 of the Daytime Running Light (DRL) relay C1012, circuit 30-LE7 (Red) and ground. |
|
• Is battery voltage registered? |
|
|
→ Yes |
|
|
Go to A3 |
|
|
→ No |
|
|
REPAIR open circuit between fuse F22 and daytime running lamp (DRL) relay using the wiring diagrams. Check for proper system operation |
|
|
A3: CHECK DAYTIME RUNNING LIGHT (DRL) RELAY CONTROL CIRCUIT |
|
|
1Enter the ON position. |
|
|
2Measure the voltage between pin 1 of the daytime running light (DRL) relay C1012 and ground. |
|
• Is battery voltage registered? |
|
|
→ Yes |
|
|
Go to A4 |
|
|
→ No |
|
|
Go to A6 |
|
|
A4: CHECK GROUND CONNECTION OF DAYTIME RUNNING LIGHT (DRL) RELAY |
|
|
1Enter the OFF position. |
|
|
2Measure the resistance between pin 2 of the daytime running light (DRL) relay C1012 and ground. |
|
• Is the resistance less than 2 ohms? |
|
|
→ Yes |
|
|
Go to A5 |
|
|
→ No |
|
|
REPAIR open circuit(s) between Daytime Running Light (DRL) relay and G1 ground using the Wiring Diagrams. Check for proper system operation |
|
|
A5: CHECK DAYTIME RUNNING LIGHT (DRL) RELAY |
|
|
1Connect the jumper wire to connector C1012 of the daytime running light (DRL) relay, between pin 3, circuit 30-LE7 (red) and pin 5, circuit(s) 15S-LE8 (green/red), 15S-DC19 (green/blue). |
|
2Check the headlights. |
|
|
• Are the daytime running lights on? |
|
|
→ Yes |
|
|
INSTALL a new Daytime Running Light (DRL) relay. Check for proper system operation |
|
|
→ No |
|
|
REPAIR open in circuit(s) 15S-LE8 (Green/Red), between Daytime Running Light (DRL) relay and S120 connection, using the Wiring Diagrams. If necessary, INSTALL new DRL resistor. Check for proper system operation |
|
|
A6: CHECK THE LIGHT SWITCH |
|
|
1Enter the OFF position. |
|
|
2Disconnect Light Switch - C320. |
|
|
3Measure the resistance between pin 4 of the light switch C320, circuit 15S-LE6 (green/yellow), harness side and pin 1 of the daytime running light (DRL) relay C1012, circuit 15S-LE6 (green/yellow). |
|
• Is the resistance less than 2 ohms? |
|
|
→ Yes |
|
|
TEST the light switch as described in the component testing: Refer to Section 417-01 for additional information. If necessary, INSTALL a new component. Check for proper system operation |
|
|
→ No |
|
|
REPAIR open circuit(s) between light switch pin 4 C320 and daytime running lamp (DRL) relay using the wiring diagrams. Check for proper system operation |
|
PINPOINT TEST B: DAYTIME WORKING LIGHTS ARE ON WHEN IGNITION IS OFF
|
STATES |
DETAILS/RESULTS/ACTIONS |
|
B1: CHECK DAYTIME RUNNING LIGHT (DRL) RELAY |
|
|
1Enter the OFF position. |
|
|
2Disconnect Daytime Running Light (DRL) Relay - C1012. |
|
|
3Check the headlights. |
|
|
• Are the daytime running lights on? |
|
|
→ Yes |
|
|
Go to B5 |
|
|
→ No |
|
|
Go to B2 |
|
|
B2: CHECK DAYTIME RUNNING LIGHT (DRL) RELAY CONTROL CIRCUIT |
|
|
1Measure the voltage between pin 1 of the daytime running light (DRL) relay C1012, circuit 15S-LE6 (Green/Yellow) and ground. |
|
• Is battery voltage registered? |
|
|
→ Yes |
|
|
Go to B3 |
|
|
→ No |
|
|
INSTALL a new Daytime Running Light (DRL) relay. Check for proper system operation |
|
|
B3: CHECK THE DAYTIME RUNNING LIGHT RELAY (DRL) CONTROL CIRCUIT FOR A SHORT CIRCUIT TO THE POWER SUPPLY |
|
|
1Disconnect Light Switch - C320. |
|
|
2Measure the voltage between pin 1 of the daytime running light (DRL) relay C1012, circuit 15S-LE6 (Green/Yellow) and ground. |
|
• Is battery voltage registered? |
|
|
→ Yes |
|
|
REPAIR the short to power in the circuit(s) connected to pin 1 of the C1012 Daytime Running Light (DRL) Relay using the Wiring Diagrams. Check for proper system operation |
|
|
→ No |
|
|
Go to B4 |
|
|
B4: CHECK LIGHT SWITCH |
|
|
1Measure the voltage between light switch pin 8 C320, circuit 15-LE29 (Green/Black), and ground. |
|
• Is battery voltage registered? |
|
|
→ Yes |
|
|
REPAIR the short to power in the circuit(s) connected to fuse F61 using the wiring diagrams. Check that the system is operating correctly |
|
|
→ No |
|
|
TEST the light switch as described in the component testing: Refer to Section 417-01 for additional information. If necessary, INSTALL a new component. Check for proper system operation |
|
|
B5: CHECK THE POWER SUPPLY OF THE DAYTIME WORKING LIGHTS FOR A SHORT CIRCUIT TO THE POWER SUPPLY |
|
|
1Disconnect Fuse F19 (BJB). |
|
|
2Check the headlights. |
|
|
• Are the daytime running lights on? |
|
|
→ Yes |
|
|
REPAIR the short to power in circuit(s) 15S-LE8 (Green/Red) and 15S-DC19 (Green/Blue) connected to the Daytime Running Light (DRL) relay using the Wiring Diagrams. Check for proper system operation |
|
|
→ No |
|
|
Go to B6 |
|
|
B6: CHECK PARKING LAMP (DRL) POWER SUPPLY FOR SHORT TO POWER SOURCE |
|
|
1Connect Fuse F19 (BJB). |
|
|
2Disconnect the Light Switch (C320). |
|
|
3Check the headlights. |
|
|
• Are the daytime running lights on? |
|
|
→ Yes |
|
|
REPAIR short to power in circuit(s) 15S-LE29 (Green/Black) connected to fuse F19 using the wiring diagrams. Check for proper system operation |
|
|
→ No |
|
|
For additional information, refer to Section 417-01, Clearance and Parking Lamps. |
|
PINPOINT TEST C: PARKING LIGHTS DO NOT WORK WHEN DAYTIME WORKING LIGHTS ARE ON
|
STATES |
DETAILS/RESULTS/ACTIONS |
|
C1: DETERMINE THE STATE |
|
|
1Turn the light switch to the "PARKING LIGHTS" position. |
|
|
2Check the parking lights. |
|
|
• Are the parking lights on? |
|
|
→ Yes |
|
|
Go to C2 |
|
|
→ No |
|
|
For additional information, see Section 417-01. |
|
|
C2: CHECK FUSE F19 |
|
|
1Enter the OFF position. |
|
|
2CHECK Fuse F19 (BJB). |
|
|
3CHECK FUSE F19 (10A) |
|
|
• Is the fuse good? |
|
|
→ Yes |
|
|
Go to C3 |
|
|
→ No |
|
|
Install a new fuse F19 (10A). If the fuse blows again, LOCATE and REPAIR the short circuit using the wiring diagrams. Check the system for proper operation |
|
|
C3: CHECK POWER SUPPLY TO FUSE F19 |
|
|
1Connect Fuse F19 (BJB). |
|
|
2Enter the ON position. |
|
|
3Measure the voltage between fuse F19 (BJB) and ground. |
|
|
• Is battery voltage registered? |
|
|
→ Yes |
|
|
Go to C4 |
|
|
→ No |
|
|
REPAIR open in circuit(s) 15S-DC19 (Green/Blue) between Daytime Running Light (DRL) relay and fuse F19 using the Wiring Diagrams. Check for proper system operation |
|
|
C4: CHECK CIRCUIT TO LIGHT SWITCH FOR OPEN |
|
|
1Enter the OFF position. |
|
|
2Disconnect Light Switch - C320. |
|
|
3Disconnect Daytime Running Light (DRL) Relay - C1012. |
|
|
4Connect the jumper wire to the daytime running light (DRL) relay connector C1012 between pin 3, circuit 30-LE7 (red), and pin 5, circuit(s) 15S-LE8 (green/red), 15S-DC19 (green/blue). |
|
5Enter the ON position. |
|
|
6Measure the voltage between light switch pin 15 C320, circuit 15S-LE29 (Green/Black), harness side and ground. |
|
• Is battery voltage registered? |
|
|
→ Yes |
|
|
CHECK the light switch according to the component test description: Refer to Section 417-01 for additional information. If necessary, INSTALL a new component. Check the system for proper operation |
|
|
→ No |
|
|
REPAIR open in circuit(s) 15S-LE29 (Green/Black) between fuse F19 (BJB) and light switch using the wiring diagrams. Check for proper system operation |
|
(The original post is on the web portal: FordBook)