Nearside main beam inoperative - bulb ok - relay ok - fuse ok. Zero voltage on red wire at bulb connector. What are the wiring details between the relay/fuse box and the headlamp bulb?
SOURCE: Headlight will not come on 1999 saab 95. 12 vdc to
If the fuses is O.K. check again the relay.I had the same problem in mySAAB 95.The relays/one for left and another for right headlamp/is located in engine compartment behing the battery under a black plastic cover.Check also the relays terminals.
SOURCE: 2004 saab linear turbo.
Welcome to FIxYa.com what size engine please to look this up for you Thank you for using FixYa.com Regards, Lee Davidian
?€¢
Lamp control module (LCM)
?€¢
Switch of the RH IP fuse block headlamp relay position J
When the headlamp switch is placed in the ON position, battery positive voltage (B+) is supplied via CKT 10 (YEL) to the coil of the headlamp relay position J. The coil is permanently grounded to G201 via CKT 1450 (BLK). The coil is energized and the contacts close providing battery positive voltage (B+) to the headlamp dimmer switch via CKT 1346 (LT BLU). When the headlamp dimmer switch is in the LOW position, battery positive voltage (B+) is supplied via CKT 12 (TAN) to the following components:
?€¢
Left low beam headlamp
?€¢
Right low beam headlamp
The LCM provides battery positive voltage (B+) via CKT 1346 (LT BLU) through the headlamp dimmer switch to the headlamps under the following conditions:
?€¢
The ignition switch is in the RUN position.
?€¢
The ambient light sensor indicates darkness.
The lamp control module (LCM) monitors the ambient light conditions through the ambient light sensor. The ambient light sensor is a variable resistor whose resistance changes as the surrounding ambient light level changes. As the ambient light decreases, the resistance of the ambient light sensor increases. The LCM measures the resistance across the ambient light sensor and determines whether it is day or night.
Headlamps Inoperative - Low Beams (Oldsmobile)
This is a lengthy diagnostic flow chart .
1
Did you perform the headlights system check?
--
Go to Step 2
Go to Headlight System Check
2
The headlamp circuit is rather simple. From the 15 amp RH headlamp fuse, there is a red w/yellow trace that goes to the RH high beam. Out of the 15 amp LH headlamp fuse, the wire going to the LH Hi beam is solid red. Both of these wires should have power when the headlamp relay is energized. The wires from the Hi Beam bulbs going back to the switch should both be red w/black trace. The wire going from the headlamp relay to power the 2 15 amp fuses is white. The headlamp switch applies a ground to illuminate either the Lo Beams or the Hi Beams.
443 views
Usually answered in minutes!
×