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

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

C1-C2:

C2 Continued:

Normal Operation
The smart junction box (SJB) sends a pulse-width modulated (PWM) voltage to the dimmable components through circuits VLN04 (VT/GY). Ground for the illumination source(s) is supplied through circuits GD116 (BK/VT), GD126 (BK/WH) and GD139 (BK/YE).

DTC B2026 - sets when the SJB detects a short to ground on the floor shifter or clock circuit (Fusion, Milan).

DTC B2027 - sets when a short to ground is detected on circuit VLN04 (VT/GY).

Possible Causes
- Circuit CLN04 (BU/BN) open
- Circuit CPW15 (YE) open
- Circuit CPW16 (BU/OG) open
- Circuit CPW17 (BN/GN) open
- Circuit CPW18 (GY/VT) open
- Circuit GD116 (BK/VT) open
- Circuit GD126 (BK/WH) open
- Circuit GD139 (BK/YE) open
- Circuit VLN04 (VT/GY) open
- Floor shifter
- Memory seat switch (if equipped)
- Manual temperature control (if equipped)
- Message center switch
- Window adjust switch(es) (MKZ)
- Door lock control switch(es) (MKZ)
- Headlamp switch
- Hazard/pad/traction switch
- Clock
- Deck lid release switch
- SJB