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Engine Management AJ-V8/5HP24
45
Inputs and Outputs
Inputs and outputs are directed to and from the ECM through hard-wired connections and the CAN and
ISO 9141/2 (Serial Communication) data buses contained in the engine management harness (for
further information on the data buses, refer to the Technical Guide, XK8 1997 Model Year Introduction).
ECM Pin Connections
Connector/
Pin Circuit Pin Circuit Pin Circuit
EM010
001 Ignition supply
002 Load inhibit
003 Windshield/Backlight heater
request
004 A/C clutch request
005 Ignition supply
006 OK to fuel (where
incorporated)
007 Not used
008 Not used
009 Battery supply
010 Brake switch (foot brake on)
011 Brake switch (cancel cruise
control)
012 ISO 9141/2
(Serial Communication) in (L)
013 ISO 9141/2
(Serial Communication) out (K)
014 Parking brake switch
015 Park/Neutral switch
016 EMS control relay
017 Security acknowledged
018 Not used
019 Not used
020 Sensor ground (ECT, air intake
temperature, accelerator pedal
position, mechanical guard
position and throttle position)
021 Sensor 5 V supply (accelerator
pedal position, mechanical
guard position and throttle
position)
022 EGR ground
023 Signal ground 1
024 Not used
025 CAN in (-)
026 CAN in (+)
027 CAN out (-)
028 CAN out (+)
EM011
001 Cruise control set +/set -
(acceleration/deceleration)
002 Not used
003 ECM programming
004 Cruise control on/off
005 Cruise control resume/cancel
006 Engine crank
007 Not used
008 Sensor 5 V supply (accelerator
pedal position, mechanical
guard position and throttle
position)
009 ECT sensor
010 Throttle position sensor 2
011 Throttle position sensor 1
012 Sensor ground (ECT, air intake
temperature, accelerator pedal
position, mechanical guard
position and throttle position)
013 Mechanical guard position
sensor
014 Shield ground (accelerator
pedal position, mechanical
guard position and throttle
position sensors)
015 Accelerator pedal position
sensor 2
016 Accelerator pedal position
sensor 1
EM012
001 EGR valve 1
002 EGR valve 2
003 EGR valve 3
004 EGR valve 4
005 A/C high pressure switch
006 A/C low pressure switch
007 Not used
008 Ignition failure amplifier 2
009 Ignition failure amplifier 1
010 A/C clutch relay
011 Not used
012 Air intake temperature sensor
013 MAFS
014 HO2S B
015 HO2S A
016 O2S B (where fitted)
017 O2S A (where fitted)
018 MAFS ground
019 MAFS ground
020 Not used
021 Not used
022 Shield ground (HO2S and O2S)