Park Lamps Inoperative - Front P72
Circuit Description
Voltage is supplied through the TAIL LPS fuse to the headlight switch at all times. With the headlight switch in "PARK" or "HEAD," voltage is supplied to the park, tail, sidemarker and license lights.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 |
Are the front park and sidemarker lamps on? | -- | System OK | Go to Step 2 |
2 | Probe the ORN (40) wire at the headlamp switch connector with a test lamp. Does the test lamp illuminate? | -- | Go to Step 3 | Go to Step 4 |
3 | Probe the BRN (9) wire at the headlamp switch. Does the test lamp illuminate? | -- | Go to Step 5 | Go to Step 6 |
4 | Locate and repair the open circuit in the ORN (40) wire between the headlamp switch and the fuse block. Is the repair complete? | -- | Go to Step 1 | -- |
5 | Probe the BRN (9) wire at C271. Does the test lamp illuminate? | -- | Go to Step 8 | Go to Step 7 |
6 | Replace the headlamp switch. Is the repair complete? | -- | Go to Step 1 | -- |
7 | Locate and repair the open circuit in the BRN (9) wire between the headlamp switch and C271. Is the repair complete? | -- | Go to Step 1 | -- |
8 | Refer to the coach manufacturer's repair manual in order to diagnose and repair the system. is the repair complete? | -- | System OK | -- |
Park Lamps Inoperative - Front P92
Circuit Description
Voltage is supplied through a circuit breaker to the headlight switch at all times. With the headlight switch in "PARK" or "HEAD," voltage is supplied to the park, tail, sidemarker and license lights.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 |
Are the front park and sidemarker lamps on? | -- | System OK | Go to Step 2 |
2 | Probe the WHT (46) wire at the headlamp switch connector with a test lamp. Does the test lamp illuminate? | -- | Go to Step 3 | Go to Step 4 |
3 | Probe the WHT (243) wire at the headlamp switch. Does the test lamp illuminate? | -- | Go to Step 5 | Go to Step 6 |
4 | Locate and repair the open circuit in the WHT (46) wire between the headlamp switch and the fuse block. Is the repair complete? | -- | Go to Step 1 | -- |
5 | Probe the WHT (243) wire at C206. Does the test lamp illuminate? | -- | Go to Step 8 | Go to Step 7 |
6 | Replace the headlamp switch. Is the repair complete? | -- | Go to Step 1 | -- |
7 | Locate and repair the open circuit in the WHT (243) wire between the headlamp switch and C206. Is the repair complete? | -- | Go to Step 1 | -- |
8 | Refer to the coach manufacturer's repair manual in order to diagnose and repair the system. Is the repair complete? | -- | System OK | -- |
