Triumph Tiger Explorer XR 2017 Service Manual page 283

Tiger Explorer XR Series
Fault Code
P1640
P16A2
Pinpoint Tests
Test
1 Check cable and terminal integrity:
- Engine ECM pin A33
- Engine ECM pin A34
- IMU pin 3
- IMU pin 2
- IMU pin 4
- IMU pin 1
2 Check cable for short circuit:
- Engine ECM pin A33 to ground
- Engine ECM pin A34 to ground
- IMU pin 4 to ground
3 Check cable continuity:
- Engine ECM pin A33 to IMU pin 3
- Engine ECM pin A34 to IMU pin 2
- IMU pin 4 to main fuse box, Fuse 6
(with the ignition switch and engine
stop switch in the RUN position)
4 Check cable for short circuit:
- Engine ECM pin A34 to Engine ECM
pin A33
5 Reconnect harness, clear fault code
and run engine to verify fault cleared
Circuit Diagram
279 of 746
Possible Cause
malfunction
Roll-over detection disabled due
to Inertial Measurement Unit
(IMU) malfunction
Engine ECM detects Inertial
Measurement Unit (IMU) present
but with signal error
Result
OK
Faulty
OK
Short circuit
OK
Open circuit
OK
Short circuit
OK
Fault still present
Action
Disconnect Engine ECM and
proceed to pinpoint test 1:
Action
Proceed to test 2
Rectify fault, proceed to test 5
Proceed to test 3
Locate and rectify wiring fault, proceed
to test 5
Proceed to test 4
Locate and rectify wiring fault, proceed
to test 5
Proceed to test 5
Locate and rectify wiring fault, proceed
to test 5
Action complete - quit test
Contact Triumph service
FUEL SYSTEM / ENGINE MANAGEMENT