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5A–12 BRAKE CONTROL SYSTEM EHCU Connector Pin-out Checks D Disconnect Electronic Brake Control Module. D Perform checks with high impedance digital No. Circuit to be Tested Ignition Switch Position Multimeter Scale/Range Measure between Pin Number Nominal Value Note 1 Ignition enable OFF 20DCV 8 (+), 15 (–) 0V to 0.1V ON 20DCV 8 (+), 15 (–) 11.5V to 14.5V 2 Stop light switch OFF 20DCV 10, 15 10.5V to 14.5V Press brake pedal 3 Ground connection OFF 200 W 12, Ground Less than 2 W 4 FL speed sensor OFF 2k W 20, 21 1.3k to 1.9k W Internal Resistance OFF 200k W 20, 15 more than 100k W Insulation Resistance OFF 200mACV 20, 21 more than 200mV Turn wheel at 1RPS 5 FR speed sensor OFF 2k W 4, 5 1.3k to 1.9k W Internal Resistance OFF 200k W 4, 15 more than 100k W Insulation Resistance OFF 200mACV 4, 5 more than 200mV Turn wheel at 1RPS 6 RL speed sensor OFF 2k W 22, 23 1.3k to 1.9k W Insulation Resistance OFF 200k W 22, 15 more than 100k W Internal Resistance OFF 200mACV 22, 23 more than 200mV Turn wheel at 1RPS 7 RR speed sensor OFF 2k W 2, 3 1.3k to 1.9k W Internal Resistance OFF 200k W 2, 15 more than 100k W Insulation Resistance OFF 200mACV 2, 3 more than 200mV Turn wheel at 1RPS 8 G-sensor ON 26,8 1k to 2k W Horizontal vehicle 9 Transmission Input ON 20DCV 6 (+), 15 (–) Less than 6V (Shift lever position – L, R) 6.6 to 9.0V (other shift position) A/T More than 9.6V (Shift lever position – 1, 2, R) 6.6 to 9.0V (other shift position) M/T |