C1020-LEFT REAR WHEEL SPEED SENSOR CIRCUIT

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Transcription:

9 - MK - JEEP COMPASS/PATRIOT -.L 4 CYL PZEV 6V DUAL V.V.T. C- CIRCUIT OPTION OPTION B LG/DB B4 LG/BK B DG/OR B YL/DB B DG/LB C4 6 5 C B8 B9 B B4 B DG/TN DG/LG LG/DB LG YL/DB B YL B6 WT/DB B7 WT 46 45 7 6 4 4 4 VOLT VOLT VOLT VOLT MODULE- ANTI- LOCK BRAKES 47 6 MODULE- ANTI- LOCK BRAKES 88e5cd For a complete wiring diagram, refer to the Wiring Information. When Monitored: With the ignition on. Set Condition:

If the Left Rear Wheel Speed Sensor circuit fails the diagnostic test. Possible Causes WIRING HARNESS, TERMINAL, CONNECTOR DAMAGE (B4) WSS VOLT CIRCUIT SHORTED TO VOLTAGE, GROUND, OR OPEN (B) WSS CIRCUIT SHORTED TO VOLTAGE, GROUND, OR OPEN (B) WSS CIRCUIT SHORTED TO THE (B4) WSS VOLT CIRCUIT WSS ANTI-LOCK BRAKES MODULE. CHECK FOR DTC C- CIRCUIT NOTE:. Turn the ignition on. This DTC must be active for the results of this test to be valid.. With the scan tool, record and erase DTCs.. Cycle the ignition switch from off to on. 4. With the scan tool, read DTCs. Does the scan tool display: C- CIRCUIT active? Yes Go To No The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires. Perform the ABS-INTERMITTENT CONDITION TEST. (Refer to 8 - DTC-Based Diagnostics/MODULE, Antilock Brake (ABS) - Standard. CHECK CONNECTOR/TERMINAL FOR DAMAGE NOTE:. Turn the ignition off. Check all terminals for broken, bent, pushed out, or corroded terminals.. Inspect the Anti-Lock Brake Module harness connector, Left Rear WSS, and Left Rear WSS harness connector. Is the Left Rear WSS or any of the connectors/terminals damaged? Yes Repair as necessary. (Refer to 8 - DTC-Based Diagnostics/MODULE, Antilock Brake (ABS) - Standard No Go To

. CHECK (B4) WSS VOLT CIRCUIT VOLTAGE. Disconnect the Left Rear WSS harness connector.. Turn the ignition on.. Measure the voltage of the (B4) Left Rear WSS Volt Supply circuit. Is the voltage above. volts? V Yes Go To 6 No Go To 4 775 4. CHECK (B4) WSS VOLT CIRCUIT FOR A SHORT TO GROUND. Turn the ignition off.. Disconnect the Left Rear WSS harness connector.. Disconnect the Anti-Lock Brake Module harness connector. 4. Using a -volt test light connected to -volts, probe the (B4) Left Rear WSS Supply circuit. Yes Repair the (B4) Left Rear WSS Supply circuit for a short to ground. (Refer to 8 - DTC-Based Diagnostics/ No Go To 5 7755

5. CHECK (B4) WSS VOLT CIRCUIT FOR AN OPEN. Connect a jumper wire between ground and the (B4) Left Rear WSS Supply circuit in the Anti-Lock Brakes Module harness connector.. Using a -volt test light connected to -volts, probe the (B4) Left Rear WSS Supply circuit. Yes Replace the Anti-Lock Brakes Module in accordance with the Service Information. (Refer to 8 - DTC-Based Diagnostics/ No Repair the (B4) Left Rear WSS Supply circuit for an open. (Refer to 8 - DTC-Based Diagnostics/ 7755 6. CHECK (B) WSS CIRCUIT FOR A SHORT TO GROUND. Turn the ignition off.. If not done previously, disconnect the Anti-Lock Brake Module harness connector.. Turn the ignition on. 4. Using a -volt test light connected to -volts, probe the (B) Left Rear WSS Signal circuit. Yes Repair the (B) Left Rear WSS Signal circuit for a short to ground. (Refer to 8 - DTC-Based Diagnostics/ No Go To 7 7757 4

7. CHECK (B) WSS CIRCUIT FOR AN OPEN. Connect a jumper wire between ground and the (B) Left Rear WSS Signal circuit in the Anti-Lock Brakes Module harness connector.. Using a -volt test light connected to -volts, probe the (B) Left Rear WSS Signal circuit. Yes Go To 8 No Repair the (B) Left Rear WSS Signal circuit for an open. (Refer to 8 - DTC-Based Diagnostics/ 7757 8. CHECK (B) WSS CIRCUIT SHORT TO VOLTAGE. Turn the ignition on.. Remove all jumper wires.. Measure the voltage between the (B) Left Rear WSS Signal circuit and ground. Is the voltage above one volt? V Yes Repair the (B) Left Rear WSS Signal circuit for a short to voltage. (Refer to 8 - DTC-Based Diagnostics/ No Go To 9 7759 5

9. CHECK (B) WSS CIRCUIT AND (B4) WSS VOLT CIRCUIT SHORTED TOGETHER. Turn the ignition off.. Measure the resistance between the (B) Left Rear WSS Signal circuit and the (B4) Left Rear WSS Supply circuit. Is the resistance above 5. Ohms? Yes Go To No Repair the (B) Left Rear WSS Signal circuit and the (B4) Left Rear WSS Supply circuit for a short together. (Refer to 8 - DTC-Based Diagnostics/ 776.. Replace the Left Rear Wheel Speed Sensor in accordance with the Service Information.. Perform the ABS VERIFICATION TEST. (Refer to 8 - DTC-Based Diagnostics/MODULE, Antilock Brake (ABS) - Standard WARNING: To avoid possible serious or fatal injury, check brake capability is available before road testing.. Road test the vehicle over 4 km/h (5 mph.). NOTE: Vehicle must be driven above 4 km/h (5 mph) for set conditions to be met. 4. With the scan tool, read ABS DTCs. Did DTC C- CIRCUIT reset? Yes Replace the Anti-Lock Brakes Module in accordance with the Service Information. (Refer to 8 - DTC-Based Diagnostics/MODULE, Antilock Brake (ABS) - Standard No Test Complete. 6