POWER WINDOW CONTROL SYSTEM > Power Window Master Switch Power Source Circuit |

| 1.CHECK WIRE HARNESS (MULTIPLEX NETWORK MASTER SWITCH - BATTERY AND BODY GROUND) |
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Disconnect the P19 connector.
Measure the voltage and resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
| P19-9 (CPUB) - Body ground | Always | 10 to 14 V |
| P19-10 (BDR) - Body ground | Always | 10 to 14 V |
| P19-20 (SIG) - Body ground | Ignition switch ON | 10 to 14 V |
| Tester Connection | Condition | Specified Condition |
| P19-2 (GND) - Body ground | Always | Below 1 Ω |
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| OK | ||
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