C1682, C1683, C1684 - CAN Fault

C1682, C1683, C1684 - CAN Fault - Fault - CM8; CR8; CS8; DR5; DS5; HF8; HG8; HJ8; HK8; HL8; LG1; LGX; LJ2; LK2; LL1; PB1; PJ1; PJZ; PM1; PR1; PS1; PX1; PY1

Fault Code

Possible cause

Action

C1682

CAN fault - lost communication with engine ECM

Make sure ABS ECM connector is secure.

Proceed to pinpoint test 1:

C1683

CAN fault - lost communication with instrument panel

C1684

CAN lost fault - all communication

Subheading - Pinpoint Test

Pinpoint Tests

C1682, C1683, C1684 - CAN Fault - Pinpoint Test - LG1; LGX; LL1

Test

Result

Action

1

Check cable and terminal integrity:

- ABS ECM connector pin 2

- ABS ECM connector pin 11

OK

Disconnect instruments and proceed to test 2

Faulty

Rectify fault, proceed to test 5

2

Check the cable for short circuit:

- ABS ECM pin 2 to ground

- ABS ECM pin 11 to ground

OK

Proceed to test 3

Short circuit

Rectify wiring harness fault, proceed to test 5

3

Check cable continuity:

- ABS ECM pin 2 to ECM pin C25

- ABS ECM pin 11 to ECM pin C24

- ABS ECM pin 2 to Instruments pin 2

- ABS ECM pin 11 to Instruments pin 3

- ABS ECM pin 2 to Diagnostic connector pin 6

- ABS ECM pin 11 to Diagnostic connector pin 14

- ABS ECM pin 2 to Immobiliser module pin 6

- ABS ECM pin 11 to Immobiliser module pin 1

OK

Proceed to test 4

Open circuit

Rectify wiring harness fault, proceed to test 5

4

Check cable for short circuit:

- ABS ECM pin 2 to ABS ECM pin 11

OK

Proceed to test 4

Short circuit

Rectify wiring harness fault, proceed to test 5

5

Clear fault code and test ABS to verify fault cleared.

OK

Action complete - quit test

Fault still present

Contact Triumph service

Subheading - Circuit Diagram

Circuit Diagram

C1682, C1683, C1684 - CAN Fault - Circuit Diagram - LG1; LGX; LL1

CAN Fault LG1
  1. Instruments

  2. ABS Control Module

  3. Diagnostic Connector

  4. Immobiliser

  5. Engine ECM Connector