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BRAKE CONTROL SYSTEM 5A–39 Chart B-1 With the key in the ON position (Before starting the engine). Warning light (W/L) Chart B-2 CPU Error (DTC 14 (Flash out) / C0271, C0272, C0273, C0284 (Serial Step Action Yes No 1 Is W/L fuse disconnected? Replace fuse. Go to Step 5 Go to Step 2 2 Is W/L burnt out? Replace W/L bulb. Go to Step 5 Go to Step 3 3 1. Turn the key off. 2. Disconnect coil integrated module connector (C-4). 3. Turn the key ON. Is the check voltage between coil integrated module connector Go to Step 4 Repair harness and connector. Go to Step 5 4 Is the check continuity coil integrated module connector (C-4) Check harness for suspected disconnection No fault found: Replace EHCU. Go to Step 5 Repair harness and connector. 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. Turn the key off. 2. Disconnected coil integrated module connector. 3. Inspect coil integrated module ground. Is the check resistance between the coil integrated module Go to Step 2 Repair the body ground harness. Go to Step 3 2 1. Turn the key off, connect the coil integrated module connector. 2. Erase the trouble code. 3. Turn Ignition off, then on, to perform system self-check. 4. If warning light remains on, display trouble codes once again. Is the check trouble code 14 (Flash out) / C0271, C0272, C0273, Replace EHCU. Go to Step 3 Inspect in accordance with the DTC displayed. 3 1. Reconnect all components, ensure all components are properly mounted. 2. Clear diagnostic trouble code. Was this step finished? Repeat the “Basic diagnostic flow chart" Go to Step 3 |