Low beam ? high beam ? DRL - daytime running lamps ?
- The headlamps are on continuously
- Headlamp switch.
- Circuitry.
- Multifunction switch.
- DRL relay 2 (if equipped).
- DRL jumper (if equipped).
- Headlamp relay (if equipped).
- RAP module (if equipped).
- Light sensor amplifier (if equipped).
F1 CHECK THE HIGH BEAM CIRCUIT FOR SHORT TO POWER
Pull CJB Fuse 16 (20A) - central junction box ,inside the vehicle ! Ignition on !
- Do the headlamps continue to illuminate?
- Yes GO to F2 .
No - REINSTALL the fuse.GO to F12 .
- F2 CHECK CIRCUIT 12 (LG/BK), 160 (DB/WH), AND 161 (DG/OG) FOR SHORT TO POWER
- pull fuse's CJB Fuse 21 (10A) , CJB Fuse 22 (10A)
- Do the headlamps continue to illuminate?
- Yes - REPAIR circuit 12 (LG/BK), 161 (DG/OG), or 160 (DB/WH) as necessary. TEST the system for normal operation.
No - REINSTALL the fuses. If equipped with daytime running lamps (DRL), GO to F3 .
If not equipped with DRL, GO to F6 .
- YOU CAN FIND WIRING DIAGRAM AT
http://www.bbbind.com/free_tsb.html Do you know how to use a wiring diagram ? Videos on youtube .
F3 CHECK CIRCUIT 13 (RD/BK) FOR SHORT TO POWER
do you know how to do this test ?
pull the
DRL Relay 2
- Do the headlamps continue to illuminate?
Yes REPAIR circuit 13 (RD/BK). TEST the system for normal operation.
No GO to F4 .
- Do the headlamps continue to illuminate?
Yes REPAIR circuit 13 (RD/BK). TEST the system for normal operation.
No GO to F4 .
F4 CHECK THE DRL RELAY 2
Carry out the relay test for the DRL relay 2; refer to Wiring Diagrams, Cell 149, Component Testing.
Yes GO to F5 .
No INSTALL a new DRL relay 2. TEST the system for normal operation.
F5 CHECK CIRCUIT 1032 (WH/BK) FOR SHORT TO POWER
Measure the voltage between DRL relay 2 pin 2, circuit 1032 (WH/BK), harness side, and ground.
Yes REPAIR the circuit. TEST the system for normal operation.
No GO to F6 .
F6 CHECK CIRCUIT 1033 (RD/YE) FOR SHORT TO POWER
Multifunction Switch C259
Measure the voltage between multifunction switch C259 pin 507, circuit 1033 (RD/YE), harness side, and ground.
Yes If equipped with DRL, REPAIR circuit 1033 (RD/YE). If without DRL, REPAIR circuit 13 (RD/BK), circuit 1033 (RD/YE), or DRL jumper as necessary. TEST the system for normal operation.
No If equipped with autolamps, GO to F7 . If without auto lamps, GO to F11 .
F7 CHECK THE HEADLAMP RELAY
Carry out the relay test for the headlamp relay; refer to Wiring Diagrams, Cell 149, Component Testing.
Yes GO to F8 .
No INSTALL a new headlamp relay. TEST the system for normal operation.
F8 CHECK CIRCUIT 7 (LG/YE) FOR SHORT TO POWER
Light Sensor Amplifier C216
Rap Module C257
Park Lamp Relay
Measure the voltage between headlamp relay pin 2, circuit 7 (LG/YE), harness side, and ground.
Yes REPAIR the circuit. TEST the system for normal operation.
No GO to F9 .
F9 CHECK THE HEADLAMPS FOR ILLUMINATION
Check the headlamps for illumination.
- Are the headlamps illuminated?
Yes GO to F10 .
No CHECK the headlamps while reconnecting the RAP module and light sensor amplifier. INSTALL a new RAP module or light sensor amplifier as necessary. TEST the system for normal operation.
F10 CHECK CIRCUIT 15 (RD/YE) FOR SHORT TO POWER
Measure the voltage between multifunction switch C259 pin 15, circuit 15 (RD/YE), harness side, and ground.
Yes REPAIR the circuit. TEST the system for normal operation.
No GO to F11 .
F11 CHECK THE MULTIFUNCTION SWITCH
Carry out the multifunction switch component test; refer to Wiring Diagrams, Cell 149, Component Testing.
- Is the multifunction switch OK?
Yes INSTALL a new headlamp switch; REFER to Lamp Switch-Headlamp . TEST the system for normal operation.
No INSTALL a new multifunction switch; REFER to Section 211-05 . TEST the system for normal operation.
F12 CHECK CIRCUIT 632 (GY/OG) FOR SHORT TO POWER
Multifunction Switch C259
Measure the voltage between multifunction switch C259 pin 12, circuit 632 (GY/OG), harness side, and ground.
Yes REPAIR the circuit. TEST the system for normal operation.
No INSTALL a new multifunction switch; REFER to Section 211-05 . TEST the system for normal operation.
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