198001400 - 5540BL BIDIRECTIONAL SERIAL LINE CHECK (Xenon Gas headlamps)
| CHECK TO BE PERFORMED | REMEDIAL ACTION IF THE CHECK IS NOT OK | |
|---|---|---|
| 1 | Disconnect the wiring of the master headlamp 14-way connector.Disconnect the wiring of the slave headlamp 14-way connector.Connect the diagnostic tester in ohmmeter mode and check the continuity between Pin 12 of the headlamp vehicle-side wiring 14-way connector See F010 LEFT HEADLAMP and Pin 12 of the headlamp vehicle wiring 14-way connector See F011 RIGHT HEADLAMP | Restore wiring continuity See E2011 DIPPED HEADLAMPS |
| 2 | With the headlamp 14-way connectors disconnected, check the insulation to earth by connecting between Pin 12 of each of the connectors and Earth | Restore insulation See E2011 DIPPED HEADLAMPS |
| 3 | Check the continuity between Pin 12 of the headlamp 14-way connector See F010 LEFT HEADLAMP and Pin 14 of the 21-way connector for connection to the Ballast control unit | Replace the Master headlamp Op. 5540B81 LEFT GAS DISCHARGE LIGHT CLUSTER - R.R. |
| 4 | Check the continuity across Pin 12 of the headlamp 14-way connector See F011 RIGHT HEADLAMP and Pin 14 of the 21-way connector for connection to the Ballast control unit | Replace the slave headlamp Op. 5540B82 RIGHT GAS DISCHARGE LIGHT CLUSTER - R.R. |
