Triumph Rocket 3 GT 2021 - Page 763

725
Twist Grip Position Sensor 1 Correlation Error with Twist Grip Position 2
Fault
Code
Possible cause
Action
P2138
Twist grip position sensor 1
correlation error with twist grip
position sensor 2
View and note diagnostic tool freeze
frame data if available.
View and note diagnostic tool sensor
data.
Disconnect twist grip position sensor
and proceed to pinpoint test 1:
Pinpoint Tests
Test
Result
Action
1
Turn the ignition on and measure the
Voltage between:
- Engine ECM pin B25 and Engine ECM
pin B13
- Engine ECM pin B26 and Engine ECM
pin B24
Ok -
5V DC
Proceed to test 2
Faulty
Rectify fault, proceed to
test 2
2
Check cable continuity:
- Engine ECM pin B27 to sensor pin 3
- Engine ECM pin B28 to sensor pin 4
OK
Renew the twist grip and
proceed to test 3
Open
circuit
Rectify fault, proceed to
test 3
3
Reconnect harness, clear fault code and
run engine to verify fault cleared.
OK
Action complete - quit
test
Fault
still
present
Contact Triumph service