PC10

- Key OFF.

- Insert 12V test light between bulb socket (+) and Pin 1.

- Key ON, observe test light and key OFF.

- Did the test light illuminate?

YES -- Service open in Circuit 162 (LG/R). Install bulb. Go to PC2. PC2

NO -- Service open in Circuit 570 (BK/W) between ECU Pin 1 and ground. Install bulb. Go to PC2. PC2