Triumph Tiger Explorer XR 2017 Service Manual page 665

Tiger Explorer XR Series
5 Volt Sensor Supply
Rear Suspension Unit (RSU) Preload Motor
Headlight Undercurrent/Overcurrent
Fault Code
C1027
Pinpoint Tests
Test
1 Check fuse integrity:
- Main fusebox, fuse 1 (PS1)
2 Check cable and terminal integrity:
- Chassis ECM pin A16
- Chassis ECM pin A15
- Windscreen connector pin 6
3 Check cable for short circuit:
- Chassis ECM pin A16 to ground
- Chassis ECM pin A15 to ground
4 Check cable continuity:
- Chassis ECM pin A16 to swinging
arm position sensor pin 5
- Chassis ECM pin A15 to swinging
arm position sensor pin 1
- Chassis ECM pin A16 to windscreen
motor pin 8
- Chassis ECM pin A15 to windscreen
motor pin 7
- Windscreen motor pin 6 to ground
5 Reconnect Chassis ECM, turn ignition
to ON position and measure the
voltage between windscreen
connector pins 8 and 7 (harness side)
661 of 746
Possible Cause
5V sensor supply malfunction
Result
Ok
Faulty
Ok
Faulty
Ok
Short circuit
OK
Open circuit
4.9 - 5.1 V
Faulty
Action
Disconnect Chassis ECM
connectors and proceed to
pinpoint test 1:
Action
Proceed to test 2
Replace blown fuse, proceed to test 8
Disconnect windscreen and swinging
arm position sensor connectors.
Proceed to test 3
Rectify fault, proceed to test 8
Proceed to test 4
Locate and rectify wiring fault, proceed
to test 8
Reconnect harness and proceed to test
5
Locate and rectify wiring fault, proceed
to test 8
Proceed to test 6
Contact Triumph service
ELECTRICAL