2009 JAGUAR XF relay

When a crash signal is transmitted from the RCM (restraints control module), the RJB activates the hazard flashers. The hazard flashers continue to operate until the ignition is in the off
power mode 0 or accessory power mode 6. Once this ignition state has occurred, the RCM will cease to transmit the crash signal.
LIGHTING CONTROL SWITCH
The instrument cluster outputs 2 reference voltages to the rotary lighting control switch; one feed being supplied to the light selection function of the switch and the second feed being
supplied to the auto headlamp exit delay function. The switch position is determined by instrument cluster by the change in returned signal voltage which is routed through up to 4
resistors in series depending on the selection made.
OFF - When the lighting control switch is in the off position, the reference voltage flows through 1 of the resistors. The returned signal voltage is detected by the instrument cluster which
outputs a message on the medium speed CAN bus to the CJB that no lighting selection is made. The reference voltage to the auto headlamp exit delay switch is routed through 4 resistors
which is detected by the instrument cluster which outputs a message on the medium speed CAN bus to the CJB that auto headlamp or exit delay has not been selected.
SIDE LAMPS - When the lighting control switch is in the side lamp position, the reference voltage flows through 2 of the resistors. The returned signal voltage is detected by the instrument
cluster which outputs a message on the medium speed CAN bus to the CJB to activate the side lamps. The reference voltage to the autolamp exit delay switch is routed through 4 resistors
which is detected by the instrument cluster which outputs a message on the medium speed CAN bus to the CJB that auto headlamp or exit delay has not been selected.
HEADLAMPS - When the lighting control switch is in the headlamp position, the reference voltage flows through 3 of the resistors. The returned signal voltage is detected by the instrument
cluster which outputs a message on the medium speed CAN bus to the CJB to activate the headlamps. The reference voltage to the auto headlamp exit delay switch is routed through 4
resistors which is detected by the instrument cluster which outputs a message on the medium speed CAN bus to the CJB that auto headlamp or exit delay has not been selected.
AUTOLAMPS - When the lighting control switch is in the auto headlamp position, the reference voltage flows through 4 of the resistors. The returned signal voltage is detected by the
instrument cluster which outputs a message on the medium speed CAN bus to the CJB to activate the autolamp function. The reference voltage to the autolamp exit delay switch is routed
through 4 resistors which is detected by the instrument cluster which outputs a message on the medium speed CAN bus to the CJB that auto headlamp has been selected.
AUXILIARY LIGHTING SWITCH
Headlamp Leveling Rotary Thumbwheel (Halogen headlamps only)
A power supply is passed to the headlamp leveling thumbwheel from the ignition relay in the EJB. Depending on the position of the thumbwheel, the voltage passes through 1, 2 or 3
resistors connected in series. The voltage through the resistors is passed to the headlamp leveling motor controller in each headlamp. The received voltage is determined as a request for
the appropriate level position and the controller powers the headlamp level motors to the applicable position for each headlamp.
Rear Fog Lamp Switch
The instrument cluster supplies a reference voltage and return to the rear fog lamp switch. The fog lamp switch is a non-latching, momentary switch.
When the fog lamp switch is off the reference voltage is passed through a 1Kohm resistor. The voltage through the resistor is returned to the instrument cluster that determines that no
request for fog lamp operation has been made.
When the driver presses the fog lamp switch, the reference voltage is passed through a 330 ohm resistor. The change is return voltage is sensed by the instrument cluster which
determines fog lamp operation has been requested. The instrument cluster transmits a medium speed CAN bus signal to the RJB providing the lighting control switch is in the correct
position. The RJB reacts to the message and provides a power supply to the 3 LED (light emitting diode)'s in each rear fog lamp. A fog lamp warning lamp in the instrument cluster will also
be illuminated when the fog lamps are operating.
The RJB will only activate the rear fog lamps if the headlamps are selected on or are active with auto headlamp activation. When the headlamps are turned off the fog lamps are also
turned off. When the headlamps are next switched on, the fog lamps will not be activated until the driver requests fog lamp operation.
• NOTE: The fog lamps do operate when DRL (daytime running lamps) are active.
HEADLAMP LEVELING
Manual Headlamp Leveling - Halogen headlamps only
A power supply is passed to the headlamp leveling motor in each headlamp from the ignition relay in the EJB. When a signal voltage is received from the headlamp leveling rotary
thumbwheel, the headlamp leveling motor controller in each headlamp uses the power supply to operate the motors and move the headlamp to the requested position.
Static Dynamic Headlamp Leveling - Xenon headlamps only
The headlamp leveling module receives a power supply from the ignition relay in the EJB. The same power supply is also supplied to the headlamp leveling motor in each headlamp
assembly. The front and rear height sensors are connected to the headlamp leveling module and receive a power and ground from the module. Each sensor has a signal line to the
headlamp leveling module to return height information to the module. The module uses the height signals from the sensors to calculate the vehicle attitude and supplies a signal to each
motor to power the headlamp to the required position.
Component Description
EXTERIOR BULB TYPE/RATING
The following table shows the bulbs used for the exterior lighting system and their type and specification.
• NOTE: The tail lamps, side marker lamps, stop lamps, high mounted stop lamp and rear fog lamps are illuminated by LED's and are non-serviceable components.
LIGHTING CONTROL SWITCH
BulbTypeRatingHalogen headlamp - Projector module low/high beam - Not NASH755WHalogen headlamp - Projector module low/high beam - NAS onlyH1160WXenon headlamp - Projector module low/high beam - All marketsD1S35WHigh beam only (halogen) - High/low beam (xenon) - All marketsH755WFront side lamps - all marketsW5W Halogen cool blue (HCB)5WFront turn signal indicators - Not NASPY21W21WFront turn signal indicators - NAS only3457AK27WRear turn signal indicators - All marketsPSY19W19WTurn signal indicator side repeaters - All marketsWY5W5WReverse lamps - All marketsPS19W19WLicence plate lamps - All marketsW5W5W
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6/25/2011 https://connect.jlrext.com/topix/service/procedure/144261/ODYSSEY/G970541/,DanaI...