P1621

No Code Received From Immobilisation ECU

P1621 - Immobilisation ECU.: Open circuit or No signal.

Possible causes:
1. Connector Immobilisation ECU C0059, MS43 ECM C331.
2. Open circuit C331/33 (YR) - C0059/14 (YR).
3. Short circuit C331/33 (YR) - Ground.
4. Short circuit C331/33 (YR) - Supply.
5. Immobilisation ECU fault.
6. MS43 ECM.

1. Connector Immobilisation ECU C0059, MS43 ECM C331.
CONNECTOR
Check for connector not correctly latched, backed out pins, damaged pins, corroded pins

2. Open circuit C331/33 (YR) - C0059/14 (YR).
OPEN_CIRCUIT
Check resistance > 1M Ohms.

3. Short circuit C331/33 (YR) - Ground.
SHORT_CIRCUIT
Check resistance < 5.0 Ohms.

4. Short circuit C331/33 (YR) - Supply.
PASS VALUES: 0 - 2 Volts

5. Immobilisation ECU fault
No detail available for this fault

6. MS43 ECM.
No detail available for this fault