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5A–46 BRAKE CONTROL SYSTEM Chart B-18 FR Speed Sensor Open or Shorted (DTC 52 (Flash out) / C0221 (Serial Step Action Yes No 1 1. Turn the key off. 2. Disconnect coil integrated module connector. 3. Measure the resistance between coil integrated module connector (C-4) terminals 3 and 11. Is the resistance between 2.0k and 2.8k ohms? Check for faults in harness between speed integrated module. Fault found: Repair, and perform system self-check. No fault found: Replace coil integrated module. Go to Step 3 Go to Step 2 2 Measure the FR speed sensor resistance at the sensor Repair harness abnormality between sensors and coil integrated module. Go to Step 3 Replace sensor. Go to Step 3 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 |