EBS01075 CHECKING THE SIGNALING SYSTEM EBS01053 EBS01076 1. The brake light fails to come on. 1. Brake light bulb and bulb socket Check the brake light bulb and bulb socket for continuity. Refer to “CHECKING THE BULBS AND BULB SOCKETS”. Are the brake light bulb and bulb socket OK? YES NO Replace the brake light bulb, bulb socket or both. 2. Brake light switches Check the brake light switches for continu- ity. Refer to “CHECKING THE SWITCHES”. Is the brake light switch OK? YES NO Replace the brake light switch. Are the testing readings correct? YES NO Replace the diode 3. 9 - 37 SIGNALING SYSTEM ELEC – + ELEC – + 3. Diode 3 • Remove the diode 3 from the wire har- ness.
• Connect the pocket tester (Ω × 1) to the diode 3 as shown. • Measure the diode 3 for continuity as fol- lows. NOTE: _T he pocket tester 90890-03112 and the ana- log pocket tester YU-03112-C readings are shown in the following table. Positive tester probe → yellow/white 1 Negative tester probe → yellow 2 Continuity Positive tester probe → yellow 2 Negative tester probe → yellow/white 1 No continuity 1 2 Y Y/W