P1521 - CAN Fault - Lost Communication With ABS Module Or ABS System Status Error
P1521 - CAN Fault - Lost Communication With ABS Module Or ABS System Status Error - 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 |
|---|---|---|
P1521 | CAN fault - lost communication with ABS module or ABS system status error | View and note 'freeze-frame' data if available. Make sure ABS modulator connector is secure. Proceed to pinpoint test 1: |
Subheading - Pinpoint Test
Pinpoint Tests
P1521 - CAN Fault - Lost Communication With ABS Module Or ABS System Status Error - Pinpoint Test - LG1; LGX; LJ2; LK2
Test | Result | Action | |
|---|---|---|---|
1 | Check cable and terminal integrity: - Engine ECM pin C25 - Engine ECM pin C24 - ABS modulator pin 2 - ABS modulator pin 10 - ABS modulator pin 11 - ABS modulator pin 18 | OK | Disconnect ECM and proceed to test 2 |
Faulty | Rectify fault, proceed to test 6 | ||
2 | Check cable for short circuit: - Engine ECM pin C25 to ground - Engine ECM pin C24 to ground | OK | Disconnect ABS modulator and proceed to test 3 |
Faulty | Locate and rectify wiring fault, proceed to test 6 | ||
3 | Check fuse box fuse 7 integrity. | OK | Proceed to test 5 |
Faulty | Proceed to test 4 | ||
4 | Check cable for short circuit: - ABS pin 2 to ground - ABS pin 11 to ground | OK | Proceed to test 5 |
Faulty | Locate and rectify wiring fault, replace relevant fuse, proceed to test 6 | ||
5 | Check cable continuity: - Engine ECM pin C25 to ABS pin 2 - Engine ECM pin C24 to ABS pin 11 - ABS pin 10 to ground - Fuse box fuse 7 to ABS pin 18 - Engine ECM pin C14 to ABS pin 4 | OK | Proceed to test 6 |
Fault still present | Locate and rectify wiring fault, proceed to test 6 | ||
6 | Reconnect harness, clear fault code and run engine. | OK | Action complete - quit test |
Fault still present | Contact Triumph service |
Subheading - Circuit Diagram
Circuit Diagram
P1521 - CAN Fault - Lost Communication With ABS Module Or ABS System Status Error - Circuit Diagram - LG1; LGX
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