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BRAKE CONTROL SYSTEM 5A–31 Chart TA-1 ABS Works Frequently But Vehicle Does Not Decelerate (Use TECH 2) Chart A-2 Uneven Braking Occurs While ABS Works Chart TA-2 Uneven Braking Occurs While ABS Works (Use TECH 2) Step Action Yes No 1 1. Connect TECH 2. 2. Make sure of the output conditions of each sensor. Is the output of each sensor normal? Go to Step 2 Replace wheel speed sensor. Go to Step 3 2 Return to Chart A-1. Go to Step 3 Go to Step 2 3 Reconnect all components, ensure all components are properly Repeat the “Basic diagnostic flow chart" Go to Step 3 Step Action Yes No 1 Is there play in each or any sensor? Repair. Go to Step 5 Go to Step 2 2 Damage or powdered iron sticking to each or any sensor/sensor Repair. Go to Step 5 Go to Step 3 3 Is the output of each sensor normal? (Refer to chart C-1 or TC-1) Go to Step 4 Replace sensor or repair harness. Go to Step 5 4 Is brake pipe connecting order correct? Replace H/U. Go to Step 5 Reconnect brake pipe correctly. Go to Step 5 5 Reconnect all components, ensure all components are properly Repeat the “Basic diagnostic flow chart" Go to Step 5 Step Action Yes No 1 1. Connect TECH 2. 2. Make sure of the output conditions of each sensor. Is the output of each sensor normal? Go to Step 2 Go to Step 3 2 Check piping by TECH 2 ACTUATOR TEST Replace EHCU. Go to Step 4 Repair the pipe. Go to Step 4 3 Repair and check the wheel speed sensor (Refer to chart B-20 to Go to Step 4 Go to Step 3 4 Reconnect all components, ensure all components are properly Repeat the “Basic diagnostic flow chart" Go to Step 4 |