POSSIBLE CAUSES Dodge Challenger III facelift

POSSIBLE CAUSES

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1. CHECK FOR DTC C100A-LEFT FRONT WHEEL SPEED SENSOR CIRCUIT NOTE: This DTC must be active for the results of this test to be valid. Turn the ignition on. With the scan tool, record and erase DTCs. Cycle the ignition switch from off to on. With the scan tool, read DTCs. Does the scan tool display: C100A-LEFT FRONT WHEEL SPEED SENSOR CIRCUIT? Yes Go To 2 . No Perform the ABS INTERMITTENT CONDITION TEST. Refer to «ABS INTERMITTENT CONDITION»(ref-489363-S21283190062012072600000) .
2. CHECK CONNECTOR/TERMINAL FOR DAMAGE NOTE: Check all terminals for broken, bent, pushed out, or corroded terminals. Turn the ignition off. Inspect the Anti-Lock Brake Module harness connector, Left Front WSS, and Left Front WSS harness connector. Is the Left Front WSS or any of the connectors/terminals damaged? Yes Repair as necessary. Perform ABS VERIFICATION TEST. Refer to «ABS VERIFICATION TEST»(ref-489363-S19403683272012072600000) . No Go To 3 .
3. CHECK (B9) LEFT FRONT WSS 12 VOLT SUPPLY CIRCUIT VOLTAGE Disconnect the Left Front WSS harness connector. Turn the ignition on. Measure the voltage of the (B9) Left Front WSS 12 Volt Supply circuit. Is the voltage above 10.0 volts? Yes Go To 6 . No Go To 4 .
4. CHECK (B9) LEFT FRONT WSS SUPPLY CIRCUIT SHORT TO GROUND Turn the ignition off. Disconnect the Left Front WSS harness connector. Disconnect the Anti-Lock Brake Module harness connector. Using a 12-volt test light connected to 12 volts, probe the (B9) Left Front WSS Supply circuit. Does the test light illuminate brightly? Yes Repair the (B9) Left Front WSS Supply circuit for a short to ground. Perform ABS VERIFICATION TEST. Refer to «ABS VERIFICATION TEST»(ref-489363-S19403683272012072600000) . No Go To 5 .
5. CHECK (B9) LEFT FRONT WSS SUPPLY CIRCUIT OPEN Connect a jumper wire between ground and the (B9) Left Front WSS Supply circuit in the Anti-Lock Brake Module harness connector. Using a 12-volt test light connected to 12 volts, probe the (B9) Left Front WSS Supply circuit. Does the test light illuminate brightly? Yes Replace the Anti-Lock Brake Module in accordance with the Service Information. Perform ABS VERIFICATION TEST. Refer to «ABS VERIFICATION TEST»(ref-489363-S19403683272012072600000) . No Repair the (B9) Left Front WSS Supply circuit for an open. Perform ABS VERIFICATION TEST. Refer to «ABS VERIFICATION TEST»(ref-489363-S19403683272012072600000) .
6. CHECK (B8) LEFT FRONT WSS SIGNAL CIRCUIT SHORT TO GROUND Turn the ignition off. Disconnect the Anti-Lock Brake Module harness connector. Turn the ignition on. Using a 12-volt test light connected to 12 volts, probe the (B8) Left Front WSS Signal circuit. Does the test light illuminate brightly? Yes Repair the (B8) Left Front WSS Signal circuit for a short to ground. Perform ABS VERIFICATION TEST. Refer to «ABS VERIFICATION TEST»(ref-489363-S19403683272012072600000) . No Go To 7 .
7. CHECK (B8) LEFT FRONT WSS SIGNAL CIRCUIT OPEN Connect a jumper wire between ground and the (B8) Left Front WSS Signal circuit in the Anti-Lock Brake Module harness connector. Using a 12-volt test light connected to 12 volts, probe the (B8) Left Front WSS Signal circuit. Does the test light illuminate brightly? Yes Go To 8 . No Repair the (B8) Left Front WSS Signal circuit for an open. Perform ABS VERIFICATION TEST. Refer to «ABS VERIFICATION TEST»(ref-489363-S19403683272012072600000) .
8. CHECK (B8) LEFT FRONT WSS SIGNAL CIRCUIT SHORT TO VOLTAGE Turn the ignition on. Remove all jumper wires. Measure the voltage between the (B8) Left Front WSS Signal circuit and ground. Is the voltage above one volt? Yes Repair the (B8) Left Front WSS Signal circuit for a short to voltage. Perform ABS VERIFICATION TEST. Refer to «ABS VERIFICATION TEST»(ref-489363-S19403683272012072600000) . No Go To 9 .
9. CHECK (B8) LEFT FRONT WSS SIGNAL CIRCUIT AND (B9) LEFT FRONT WSS SUPPLY CIRCUIT SHORT TOGETHER Turn the ignition off. Measure the resistance between the (B8) Left Front WSS Signal circuit and the (B9) Left Front WSS Supply circuit. Is the resistance above 120 ohms? Yes Go To 10 . No Repair the (B8) Left Front WSS Signal circuit and the (B9) Left Front WSS Supply circuit for a short together. Perform ABS VERIFICATION TEST. Refer to «ABS VERIFICATION TEST»(ref-489363-S19403683272012072600000) .
10. LEFT FRONT WHEEL SPEED SENSOR Replace the Left Front Wheel Speed Sensor in accordance with the Service Information. Perform ABS VERIFICATION TEST. Refer to «ABS VERIFICATION TEST»(ref-489363-S19403683272012072600000) . CAUTION: Ensure brake capability is available before road testing. Road test the vehicle over 25 mph (40 km/h). NOTE: Vehicle must be driven above 25 mph (40 km/h) for set conditions to be meet. With the scan tool, read ABS DTCs. Did DTC C100A-LEFT FRONT WHEEL SPEED SENSOR CIRCUIT reset? Yes Replace the Anti-Lock Brake Module in accordance with the Service Information. Perform ABS VERIFICATION TEST. Refer to «ABS VERIFICATION TEST»(ref-489363-S19403683272012072600000) . No Test complete.

With the ignition on.

When the Left Front Wheel Speed Sensor (WSS) Signal is intermittently missing while vehicle speed is above 25 mph (40 km/h) or erratic wheel speed signal during acceleration or sensed wheel speed is different from other wheels.

With the ignition on.

When the Left Front Wheel Speed Sensor (WSS) Signal reading is different from the readings received from the other WSS's at a vehicle speed above 25 mph (40 km/h). The Anti-Lock Brake Module compares WSS readings from side-to-side on an axle and front-to-rear.

With the ignition on.

If the Right Front Wheel Speed Sensor circuit fails the diagnostic test.

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1. CHECK FOR DTC C1015-RIGHT FRONT WHEEL SPEED SENSOR CIRCUIT NOTE: This DTC must be active for the results of this test to be valid. Turn the ignition on. With the scan tool, record and erase DTCs. Cycle the ignition switch from off to on. With the scan tool, read DTCs. Does the scan tool display: C1015-RIGHT FRONT WHEEL SPEED SENSOR CIRCUIT? Yes Go To 2 . No Perform the ABS INTERMITTENT CONDITION TEST. Refer to «ABS INTERMITTENT CONDITION»(ref-489363-S21283190062012072600000) .
2. CHECK CONNECTOR/TERMINAL FOR DAMAGE NOTE: Check all terminals for broken, bent, pushed out, or corroded terminals. Turn the ignition off. Inspect the Anti-Lock Brake Module harness connector, Right Front WSS, and Right Front WSS harness connector. Is the Right Front WSS or any of the connectors/terminals damaged? Yes Repair as necessary. Perform ABS VERIFICATION TEST. Refer to «ABS VERIFICATION TEST»(ref-489363-S19403683272012072600000) . No Go To 3 .
3. CHECK (B7) RIGHT FRONT WSS 12 VOLT SUPPLY CIRCUIT VOLTAGE Disconnect the Right Front WSS harness connector. Turn the ignition on. Measure the voltage of the (B7) Right Front WSS 12 Volt Supply circuit. Is the voltage above 10.0 volts? Yes Go To 6 . No Go To 4 .
4. CHECK (B7) RIGHT FRONT WSS 12 VOLT SUPPLY CIRCUIT FOR A SHORT TO GROUND Turn the ignition off. Disconnect the Right Front WSS harness connector. Disconnect the Anti-Lock Brake Module harness connector. Using a 12-volt test light connected to 12 volts, probe the (B7) Right Front WSS Supply circuit. Does the test light illuminate brightly? Yes Repair the (B7) Right Front WSS Supply circuit for a short to ground. Perform ABS VERIFICATION TEST. Refer to «ABS VERIFICATION TEST»(ref-489363-S19403683272012072600000) . No Go To 5 .
5. CHECK (B7) RIGHT FRONT WSS 12 VOLT SUPPLY CIRCUIT FOR AN OPEN Connect a jumper wire between ground and the (B7) Right Front WSS Supply circuit in the Anti-Lock Brake Module harness connector. Using a 12-volt test light connected to 12 volts, probe the (B7) Right Front WSS Supply circuit. Does the test light illuminate brightly? Yes Replace the Anti-Lock Brake Module in accordance with the Service Information. Perform ABS VERIFICATION TEST. Refer to «ABS VERIFICATION TEST»(ref-489363-S19403683272012072600000) . No Repair the (B7) Right Front WSS Supply circuit for an open. Perform ABS VERIFICATION TEST. Refer to «ABS VERIFICATION TEST»(ref-489363-S19403683272012072600000) .
6. CHECK (B6) RIGHT FRONT WSS SIGNAL CIRCUIT SHORT TO GROUND Turn the ignition off. Disconnect the Anti-Lock Brake Module harness connector. Turn the ignition on. Using a 12-volt test light connected to 12 volts, probe the (B6) Right Front WSS Signal circuit. Does the test light illuminate brightly? Yes Repair the (B6) Right Front WSS Signal circuit for a short to ground. Perform ABS VERIFICATION TEST. Refer to «ABS VERIFICATION TEST»(ref-489363-S19403683272012072600000) . No Go To 7 .
7. CHECK (B6) RIGHT FRONT WSS SIGNAL CIRCUIT OPEN Connect a jumper wire between ground and the (B6) Right Front WSS Signal circuit in the Anti-Lock Brake Module harness connector. Using a 12-volt test light connected to 12 volts, probe the (B6) Right Front WSS Signal circuit. Does the test light illuminate brightly? Yes Go To 8 . No Repair the (B6) Right Front WSS Signal circuit for an open. Perform ABS VERIFICATION TEST. Refer to «ABS VERIFICATION TEST»(ref-489363-S19403683272012072600000) .
8. CHECK (B6) RIGHT FRONT WSS SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition on. Remove all jumper wires. Measure the voltage between the (B6) Right Front WSS Signal circuit and ground. Is the voltage above one volt? Yes Repair the (B6) Right Front WSS Signal circuit for a short to voltage. Perform ABS VERIFICATION TEST. Refer to «ABS VERIFICATION TEST»(ref-489363-S19403683272012072600000) . No Go To 9 .
9. CHECK (B6) RIGHT FRONT WSS SIGNAL CIRCUIT AND (B7) RIGHT FRONT WSS 12 VOLT SUPPLY CIRCUIT SHORTED TOGETHER Turn the ignition off. Measure the resistance between the (B6) Right Front WSS Signal circuit and the (B7) Right Front WSS Supply circuit. Is the resistance above 120 Ohms? Yes Go To 10 . No Repair the (B6) Right Front WSS Signal circuit and the (B7) Right Front WSS Supply circuit for a short together. Perform ABS VERIFICATION TEST. Refer to «ABS VERIFICATION TEST»(ref-489363-S19403683272012072600000) .
10. RIGHT FRONT WHEEL SPEED SENSOR Replace the Right Front Wheel Speed Sensor in accordance with the Service Information. Perform ABS VERIFICATION TEST. Refer to «ABS VERIFICATION TEST»(ref-489363-S19403683272012072600000) . CAUTION: Ensure brake capability is available before road testing. Road test the vehicle over 40 km/h (25 mph.). NOTE: Vehicle must be driven above 25 mph (40 km/h) for set conditions to be meet. With the scan tool, read ABS DTCs. Did DTC C1015-RIGHT FRONT WHEEL SPEED SENSOR CIRCUIT reset? Yes Replace the Anti-Lock Brake Module in accordance with the Service Information. Perform ABS VERIFICATION TEST. Refer to «ABS VERIFICATION TEST»(ref-489363-S19403683272012072600000) . No Test complete.