Test D: One or More Module-Controlled Illumination Source(s) Is Inoperative

PINPOINT TEST D: ONE OR MORE MODULE-CONTROLLED ILLUMINATION SOURCE(S) IS INOPERATIVE

D1-D2:

D2 Continued:

Normal Operation
The smart junction box (SJB) sends a pulse-width modulated (PWM) voltage to the dimmable components through circuits CLN04 (BU/BN). Ground for the illumination source is supplied through circuits GD138 (BK/WH), GD133 (BK), GD151 (BK/GN) and GD145 (BK/BU).

Possible Causes
- Circuit CLN04 (BU/BN) open, short to ground
- Circuit GD133 (BK) open
- Circuit GD138 (BK/WH) open
- Circuit GD145 (BK/BU) open
- Circuit GD151 (BK/GN) open
- Four-wheel drive switch
- Memory set switch (if equipped)
- Auxiliary climate control switches (if equipped)
- Electronic automatic temperature control (EATC) module (if equipped)
- Heated seat/windshield switch (if equipped)
- Manual climate control switch (if equipped)
- Adjustable pedal switch (if equipped)
- Message center (if equipped)
- Traction control switch (if equipped)
- Headlamp switch (if equipped)
- Shifter assembly (if equipped)
- LH door lock control switch
- RH door lock control switch
- SJB