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Test 6A: Left Rear Sensor Circuit Failure

NOTE: After each repair, perform TEST VER-1A: VERIFICATION TEST  to confirm problem has been corrected.
  1. Turn ignition on. Using scan tool, read and then erase DTCs. Turn ignition off, then on. Using scan tool, read DTCs. If DTC returns, go to next step. If DTC does not return, go to step  12 .
  2. Turn ignition off. Inspect Left Rear (LR) Wheel Speed Sensor (WSS) and connector for obvious damage. Repair as necessary. If WSS and connector are okay, go to next step.
  3. Ensure ignition is off. Disconnect CAB connector. Inspect CAB connector for damaged or pushed out terminals. Repair connector as necessary. Check resistance across CAB connector terminals No. 2, LR WSS negative circuit (Light Green/Dark Blue wire) and No. 10, LR WSS voltage circuit (Light Green wire). If resistance is 900-1300 ohms, go to next step. If resistance is not 900-1300 ohms, go to step  7 .
  4. Disconnect LR WSS connector. Inspect connector for damaged or pushed out terminals. Repair connector as necessary. Check resistance between ground and CAB connector terminal No. 10, LR WSS voltage circuit (Light Green wire). If resistance is less than 15 k/ohms, repair Light Green wire for short to ground. If resistance is 15 k/ohms or more, go to next step.
  5. Check resistance between ground and CAB connector terminal No. 2, LR WSS negative circuit (Light Green/Dark Blue wire). If resistance is less than 15 k/ohms, repair Light Green/Dark Blue wire for short to ground. If resistance is 15 k/ohms or more, go to next step.
  6. Check resistance between ground and each WSS terminal. If resistance is less than 15,000 at either terminal, replace WSS. REAR WHEEL SPEED SENSOR  under REMOVAL & INSTALLATION. If resistance is 15 k/ohms or more at both terminals, replace CAB. See CONTROLLER ANTI-LOCK BRAKE  under REMOVAL & INSTALLATION.
  7. Disconnect LR WSS connector. Inspect connector for damaged or pushed out terminals. Repair connector as necessary. Check resistance of LR WSS voltage circuit (Light Green wire) between CAB connector terminal No. 10 and LR WSS connector terminal No. 2. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open Light Green wire.
  8. Check resistance of LR WSS negative circuit (Light Green/Dark Blue wire) between CAB connector terminal No. 2 and LR WSS connector terminal No. 1. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open Light Green/Dark Blue wire.
  9. Turn ignition on. Check voltage on CAB connector terminal No. 10, LR WSS voltage circuit (Light Green wire). If voltage is more than one volt, repair Light Green wire for short to voltage. If voltage is one volt or less, go to next step.
  10. Check voltage on CAB connector terminal No. 2, LR WSS negative circuit (Light Green/Dark Blue wire). If voltage is more than one volt, repair Light Green/Dark Blue wire for short to voltage. If voltage is one volt or less, go to next step.
  11. Turn ignition off. Check resistance between CAB connector terminal No. 2, LR WSS negative circuit (Light Green/Dark Blue wire) and No. 10, LR WSS voltage circuit (Light Green wire). If resistance is less than 200 ohms, repair Light Green wire for short to Light Green/Dark Blue wire. If resistance is 200 ohms or more, replace LR WSS. See REAR WHEEL SPEED SENSOR  under REMOVAL & INSTALLATION.
  12. Turn ignition off. Inspect related wiring harness, connectors and terminals for defective connectors, bare or broken wires. See WIRING DIAGRAMS  . Repair any problems found as necessary. If no problems are found, check if any Technical Service Bulletins (TSB) apply to vehicle.
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