P1631, P1632 - Fall Detection Switch

P1631, P1632 - Fall Detection Switch - Fault - CG7; CM7; CN7; CR7; CS7; CT7; CX7; LG1; LGX; LJ2; LK2; LL1

Fault Code

Possible cause

Action

P1631

Fall detection circuit short circuit to ground

View and note 'freeze-frame' data if available.

View and note 'sensor' data.

Ensure switch connector is secure.

Disconnect the engine ECM and proceed to pinpoint test 1:

P1632

Fall detection circuit short circuit to battery Voltage

Subheading - Pinpoint Test

Pinpoint Tests

P1631, P1632 - Fall Detection Switch - Pin point Test - LG1; LGX; LJ2; LK2; LL1

Test

Result

Action

1

Check cable and terminal integrity:

- Engine ECM pin B23

- Engine ECM pin B18

- Engine ECM pin A37

- Sensor pin 4, 5, 6

OK

Disconnect sensor and proceed to test 2

Faulty

Rectify fault, proceed to test 4

2

Check cable for short circuit:

- Engine ECM pin A37 to Engine ECM pin B18

- Engine ECM pin A37 to Engine ECM pin B23

OK

Proceed to test 3

Short circuit

Locate and rectify wiring fault, proceed to test 4

3

Check cable continuity:

- Engine ECM pin B18 to sensor pin 4

- Engine ECM pin B23 to sensor pin 6

- Engine ECM pin A37 to sensor pin 5

OK

Proceed to test 4

Open circuit

Locate and rectify wiring fault, proceed to test 4

4

Reconnect harness, clear fault code.

OK

Action complete - quit test

Fault still present

Contact Triumph service

Subheading - Circuit Diagram

Circuit Diagram

P1631, P1632 - Fall Detection Switch - Circuit Diagram - LG1; LGX

Fall Detection Switch PPT H7 (Fall detection H7)
  1. Fall Detection Switch

  2. Engine ECM Connector A

  3. Engine ECM Connector B