P2120, P2121, P2123 - Twist Grip Position Sensor 1
P2120, P2121, P2123 - Twist Grip Position Sensor 1 - Fault - CM8; CR8; CS8; DR5; DS5; HF8; HG8; HJ8; HK8; HL8; LG1; LGX; LJ2; LK2; LL1; PB1; PJ1; PJZ; PM1; PR1; PRB; PRC; PS1; PSB; PSC; PX1; PXB; PXC; PY1; PYB; PYC
Fault Code | Possible cause | Action |
|---|---|---|
P2120 | Twist grip position sensor 1 short circuit to ground or open circuit | View and note 'sensor' data. Note ECM sensors requiring a power supply will not be active. Make sure the twist grip position sensor is secure. Disconnect the engine ECM and proceed to pinpoint test 1: |
P2121 | Twist grip position sensor 1 signal out of range | |
P2123 | Twist grip position sensor 1 short circuit to battery positive |
Subheading - Pinpoint Test
Pinpoint Tests
P2120, P2121, P2123 - Twist Grip Position Sensor 1 - Pinpoint Test - HF8; HG8; HJ8; HK8; HL8; LG1; LGX; LJ2; LK2; LL1
Test | Result | Action | |
|---|---|---|---|
1 | Check cable and terminal integrity: - Engine ECM pin B26 - Engine ECM pin B27 - Engine ECM pin B24 - Engine ECM pin B28 - Engine ECM pin B25 - Engine ECM pin B13 | OK | Disconnect twist grip position sensor and proceed to test 2 |
Faulty | Rectify fault, proceed to test 5 | ||
2 | Check cable for short circuit: - Engine ECM pin B25 to ground - Engine ECM pin B26 to ground - Engine ECM pin B27 to ground - Engine ECM pin B28 to ground | OK | Proceed to test 3 |
Short circuit | Locate and rectify wiring fault, proceed to test 5 | ||
3 | Check cable continuity: - Engine ECM pin B26 to sensor pin 5 - Engine ECM pin B27 to sensor pin 3 - Engine ECM pin B24 to sensor pin 1 - Engine ECM pin B25 to sensor pin 2 - Engine ECM pin B28 to sensor pin 4 - Engine ECM pin B13 to sensor pin 6 | OK | Proceed to test 4 |
Open circuit | Locate and rectify wiring fault, proceed to test 5 | ||
4 | Check cable for short circuit: - Engine ECM pin B27 to Engine ECM pin B26 - Engine ECM pin B27 to Engine ECM pin B24 - Engine ECM pin B27 to Engine ECM pin B25 - Engine ECM pin B28 to Engine ECM pin B25 - Engine ECM pin B28 to Engine ECM pin B26 - Engine ECM pin B28 to Engine ECM pin B24 | OK | Renew twist grip position sensor, proceed to test 5 |
Short circuit | Locate and rectify wiring fault, proceed to test 5 | ||
5 | Reconnect harness, clear fault code and run engine to verify fault cleared. | OK | Action complete - quit test |
Fault still present | Contact Triumph service | ||
Subheading - Circuit Diagram
Circuit Diagram
P2120, P2121, P2123 - Twist Grip Position Sensor 1 - Circuit Diagram - LG1; LGX; LJ2; LK2; LL1
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