LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2000 >> RX 300 FWD >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock W/Traction Control >> System Tests >> Abs Warning Light Circuit >> Diagnosis & Repair

Diagnosis & Repair

  1. If ABS warning light is illuminated constantly, go to step  7. If ABS warning light does not illuminate, check fuse, ABS warning light bulb, instrument cluster and wiring. See appropriate INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT. If components are okay, go to next step.
  2. Remove ABS solenoid relay from engine compartment No. 2 relay block. Relay block is located on left side of engine compartment. Continuity should exist between relay terminals No. 2 and 3. See Figure. Continuity should not exist between relay terminals No. 1 and 3. Measure resistance between relay terminals No. 4 and 6. Resistance should be about 80 ohms. If all preceding tests are as specified, go to next step. If any preceding test is not as specified, replace ABS solenoid relay.
  3. Using jumper wires, apply battery voltage to relay terminal No. 4 and ground relay terminal 6. See Figure. Check for continuity between ABS solenoid relay terminals. Continuity should exist between relay terminals No. 1 and 3. Continuity should not exist between relay terminals No. 2 and 3. If all preceding tests are as specified, go to next step. If any preceding tests are not as specified, replace ABS solenoid relay.
  4. Connect positive lead of ohmmeter to ABS solenoid relay terminal No. 5 and negative lead to terminal No. 3. Check for continuity. If continuity exists, go to step  6. If continuity does not exist, go to next step.
  5. Connect positive lead of ohmmeter to ABS solenoid relay terminal No. 3 and negative lead to terminal No. 5. Check for continuity. If continuity does not exist, replace ABS solenoid relay. If continuity exists, go to next step.
  6. Check for open in wire harness circuits between ground, ABS solenoid relay and Data Link Connector No. 1 (DLC1). DLC1 is located on left side of engine compartment, near junction block.
  7. Retrieve Diagnostic Trouble Codes (DTC). See RETRIEVING DIAGNOSTIC TROUBLE CODES  under DIAGNOSIS & TESTING. If any DTCs are set, repair appropriate DTC. If no DTCs are set, check ABS warning light. If warning light turns off, go to next step. If warning light stays on, check for short in Black/Yellow wire between terminal No. 4 at ABS/TRAC ECU A19 connector, DLC1 and ABS warning light. See Figure. DLC1 is located on left side of engine compartment, near junction block.
  8. Check ABS solenoid relay. Go to step  2. Replacerelay as necessary. If ABS solenoid relay is okay, check for short in Violet wire between ABS solenoid relay and DLC1.
scientia non olet · About LEMON Manuals