Junction box electronics relays

The junction box electronics unit (JBE) has internal and external relays. The excitation coils on all relays are permanently supplied with a positive cable. The positive power supply for the external relays is provided via the load circuit which is to be switched through. The positive power supply for the internal relay is provided via the fused junction box electronics supply wire. All relays are controlled via the negative lead. All internal relays and the relay for wiper stage 1 and wiper stage 2 are located downstream of the fuse on the current circuit. All other external relays on the junction box electronics are located upstream of the fuse on the current circuit.

The internal relays are:

• Relay for power window drive, rear
• Relay for central-locking drive (except tailgate)

The external relays are:

• Relay for drive, rear window wiper
• Relay for drives, wiper stage 1 and wiper stage 2
• Relay for headlight washer system
• Relay for heated rear window
• Bistable relay (deactivation of closed-circuit current fault)