Triumph Tiger Explorer XR 2016, Service Manual

Page: 263 / 750

sensor supply
P2228 Ambient air
pressure sensor
circuit short
circuit to ground 3 40 Yes Ambient Air Pressure Sensor
Electrical Connectors
Before beginning any diagnosis, the following connector related information should be noted:
Note
A major cause of hidden electrical faults can be traced to faulty electrical connectors. For example:
Dirty/corroded terminals
Damp terminals
For example, the engine electronic control module (engine ECM) relies on the supply of accurate information to
enable it to plan the correct fuelling and ignition timing. One dirty terminal will cause an excessive voltage drop
resulting in an incorrect signal to the engine ECM.
If, when carrying out fault diagnosis, a fault appears to clear by simply disconnecting and reconnecting an
electrical plug, examine each disconnected plug for the following.
When Disconnecting a Connector:
Check for a security device that must be released before the connector can be separated, e.g. barb, hook
and eye etc.
When Inspecting a Connector:
Check that the individual pins have not been bent
Check for dampness/dirt/corrosion
Check cables for security
Check cable pin joints for damage.
When Connecting a Connector:
Ensure there is no dirt around the connector/seal
Push together squarely to ensure terminals are not bent or incorrectly located
Push the two halves together positively.
Disconnection of the Engine ECM Connectors
CAUTION
When disconnecting a connector, never pull directly on the wires as this may result in cable and connector
damage.
CAUTION
Never disconnect an ECM when the ignition switch is in the ON position as this may cause multiple fault
codes to be logged in the ECM memory.
Always disconnect an ECM after disconnecting the battery negative (black) lead first.
Tiger Explorer XR Series
259 of 746
FUEL SYSTEM / ENGINE MANAGEMENT