Anti-Lock Brake System & Adjustable Pedals - Electrical Diagnostics: Other Dodge Magnum I рестайлинг

Monitor Conditions

1. When Monitored: With the ignition on.

Set Conditions

1. Set Condition: When the Totally Integrated Power Module indicates that the Brake Fluid Level Circuit is less then 1.72 volt for 15 seconds.

Possible Causes

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1. BRAKE FLUID LEVEL SENSOR SIGNAL VOLTAGE BELOW 1.72 VOLTS NOTE: This DTC must be active for the results of this test to be valid. Turn the ignition on. With the scan tool, read Brake Fluid Level Sensor Signal voltage. Is the voltage below 1.72 volt? Yes Go To 2 . No Refer to the «ABS INTERMITTENT CONDITION»(ref-304475-S00851337582008111000000) diagnostic procedure.
2. CHECK BRAKE FLUID LEVEL NOTE: Visually inspect for worn brake linings or undersized rotors. Was low brake fluid level found? Yes Repair as needed. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 3 .
3. BRAKE FLUID LEVEL SENSOR INTERNAL FAILURE Turn the ignition off. Disconnect the Brake Fluid Level Sensor harness connector Turn the ignition on. With the scan tool, read the Brake Fluid Level Sensor voltage Is the voltage approximately 5 volts? Yes Replace the Brake Fluid Level Sensor in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 4 .
4. CHECK THE (B20) BRAKE FLUID LEVEL SENSOR SIGNAL CIRCUIT FOR SHORT TO GROUND Turn the ignition off. Disconnect the Totally Integrated Power Module C2 harness connector. Disconnect the Brake Fluid Level Sensor harness connector. Measure the resistance of the (B20) Brake Fluid Level circuit in the Brake Fluid Level Sensor harness connector to ground. Is the resistance below 100 ohms? Yes Repair the (B20) Brake Fluid Level circuit for a short to ground. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Replace and program the Totally Integrated Power Module in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .

1. When Monitored: With the ignition on.

1. Set Condition: When the Totally Integrated Power Module indicates that the Brake Fluid Level Circuit is greater than 3.7 volts for more then 15 seconds.

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1. BRAKE FLUID LEVEL SWITCH SIGNAL VOLTAGE ABOVE 3.7 VOLTS NOTE: This DTC must be active for the results of this test to be valid. Turn the ignition on. With the scan tool, read Brake Fluid Level Switch Signal voltage. Is the voltage above 3.7 volts? Yes Go To 2 . No Refer to the «ABS INTERMITTENT CONDITION»(ref-304475-S00851337582008111000000) diagnostic procedure.
2. (B20) BRAKE FLUID LEVEL SWITCH SIGNAL CIRCUIT FOR SHORT TO BATTERY VOLTAGE Turn the ignition off. Disconnect the Brake Fluid Level Switch harness connector. Turn the ignition on. Measure the voltage of the (B20) Brake Fluid Level signal circuit in the Brake Fluid Level Switch harness connector to ground. Is the voltage above 5.2 volts? Yes Repair the (B20) Brake Fluid Level signal circuit for a short to voltage. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 3 .
3. BRAKE FLUID LEVEL SWITCH INTERNAL FAILURE Turn the ignition off. Connect a jumper wire between the (B20) Brake Fluid Level signal circuit and the (Z902) Brake Fluid Level ground circuit in the Brake Fluid Level Switch harness connector Turn the ignition on. With the scan tool, read the Brake Fluid Level Switch voltage Is the voltage below 1.0 volt? Yes Replace the Brake Fluid Level Switch in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 4 .
4. (B20) BRAKE FLUID LEVEL SWITCH CIRCUIT OPEN Turn the ignition off. Disconnect the Brake Fluid Level Switch. Disconnect the TIPM harness connector. Measure the resistance of the (B20) Brake Fluid Level signal circuit between the Brake Fluid Level Switch harness connector and the TIPM harness connector. Is the resistance below 5 ohms? Yes Go To 5 . No Repair the open in the (B20) Brake Fluid Level Switch signal circuit. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .
5. (Z902) SENSOR GROUND CIRCUIT OPEN Turn the ignition off. Disconnect the Brake Fluid Level Switch harness connector. Reconnect the TIPM harness connector. Measure the resistance of the (Z902) Brake Fluid Level Switch ground circuit between the Brake Fluid Level Switch harness connector and ground. Is the resistance below 5.0 ohms? Yes Replace and program the Totally Integrated Power Module in accordance with the Service Information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304477-S32224544052008111000000) . No Repair the open in the (Z902) Sensor ground circuit. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .

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1. When Monitored: With the ignition on.

1. Set Condition: When the Left Front Wheel Speed Sensor circuit fails the diagnostic test.

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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 Refer to the «ABS INTERMITTENT CONDITION»(ref-304475-S00851337582008111000000) diagnostic procedure.
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»(ref-304475-S20609067312008111000000) . 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»(ref-304475-S20609067312008111000000) . 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 Brakes 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 Brakes Module in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Repair the (B9) Left Front WSS Supply circuit for an open. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .
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»(ref-304475-S20609067312008111000000) . 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 Brakes 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»(ref-304475-S20609067312008111000000) .
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»(ref-304475-S20609067312008111000000) . 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 step 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»(ref-304475-S20609067312008111000000) .
10. LEFT FRONT WHEEL SPEED SENSOR Replace the Left Front Wheel Speed Sensor in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . 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 40 km/h (25 mph) 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 Brakes Module in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Test Complete.

1. When Monitored: With the ignition on.

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

1. When Monitored: With the ignition on.

1. Set Condition: 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 40 km/h (25 mph). The Anti-Lock Brake Module compares WSS readings from side-to-side on an axle and front-to-rear.

1. When Monitored: With the ignition on.

1. Set Condition: 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 Refer to the «ABS INTERMITTENT CONDITION»(ref-304475-S00851337582008111000000) diagnostic procedure.
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»(ref-304475-S20609067312008111000000) . 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»(ref-304475-S20609067312008111000000) . 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 Brakes 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 Brakes Module in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Repair the (B7) Right Front WSS Supply circuit for an open. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .
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»(ref-304475-S20609067312008111000000) . 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 Brakes 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»(ref-304475-S20609067312008111000000) .
8. CHECK (B6) RIGHT FRONT WSS SIGNAL CIRCUIT FOR AN 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»(ref-304475-S20609067312008111000000) . 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 step 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»(ref-304475-S20609067312008111000000) .
10. RIGHT FRONT WHEEL SPEED SENSOR Replace the Right Front Wheel Speed Sensor in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . 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 40 km/h (25 mph) 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 Brakes Module in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Test Complete.

1. When Monitored: With the ignition on.

1. Set Condition: If the Right Front Wheel Speed Sensor circuit fails the diagnostic test.

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1. CHECK FOR DTC C1017-RIGHT FRONT WHEEL SPEED SENSOR CIRCUIT LOW 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: C1017-RIGHT FRONT WHEEL SPEED SENSOR CIRCUIT LOW? Yes Go To 2 . No Refer to the «ABS INTERMITTENT CONDITION»(ref-304475-S00851337582008111000000) diagnostic procedure.
2. CHECK CONNECTOR/TERMINAL FOR DAMAGE NOTE: Check all terminals for broken, bent, pushed out, or corroded terminals. Turn the ignition off. Inspect the Totally Integrated Power 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»(ref-304475-S20609067312008111000000) . No Go To 3 .
3. 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 Totally Integrated Power 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»(ref-304475-S20609067312008111000000) . No Go To 4 .
4. CHECK (B6) RIGHT FRONT WSS SIGNAL CIRCUIT SHORT TO GROUND Turn the ignition off. Disconnect the Totally Integrated Power 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»(ref-304475-S20609067312008111000000) . No Go To 5 .
5. RIGHT FRONT WHEEL SPEED SENSOR Replace the Right Front Wheel Speed Sensor in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . 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 40 km/h (25 mph) for set conditions to be meet. With the scan tool, read ABS DTCs. Did DTC C1017-RIGHT FRONT WHEEL SPEED SENSOR CIRCUIT LOW reset? Yes Replace the Totally Integrated Power Module in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Test Complete.

1. When Monitored: With the ignition on.

1. Set Condition: If the Right Front Wheel Speed Sensor circuit fails the diagnostic test.

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1. CHECK FOR DTC C1018-RIGHT FRONT WHEEL SPEED SENSOR CIRCUIT HIGH 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: C1018-RIGHT FRONT WHEEL SPEED SENSOR CIRCUIT HIGH? Yes Go To 2 . No Refer to the «ABS INTERMITTENT CONDITION»(ref-304475-S00851337582008111000000) diagnostic procedure.
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»(ref-304475-S20609067312008111000000) . 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 5 . No Go To 4 .
4. 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 Totally Integrated Power 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 Totally Integrated Power Module in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Repair the (B7) Right Front WSS Supply circuit for an open. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .
5. CHECK (B6) RIGHT FRONT WSS SIGNAL CIRCUIT OPEN Connect a jumper wire between ground and the (B6) Right Front WSS Signal circuit in the Totally Integrated Power 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 6 . No Repair the (B6) Right Front WSS Signal circuit for an open. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .
6. CHECK (B6) RIGHT FRONT WSS SIGNAL CIRCUIT FOR AN 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»(ref-304475-S20609067312008111000000) . No Go To 7 .
7. 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 step 8 . 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»(ref-304475-S20609067312008111000000) .
8. RIGHT FRONT WHEEL SPEED SENSOR Replace the Right Front Wheel Speed Sensor in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . 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 40 km/h (25 mph) for set conditions to be meet. With the scan tool, read ABS DTCs. Did DTC C1018-RIGHT FRONT WHEEL SPEED SENSOR CIRCUIT HIGH reset? Yes Replace the Totally Integrated Power Module in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Test Complete.

1. When Monitored: With the ignition on.

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

1. When Monitored: With the ignition on.

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

1. When Monitored: With the ignition on.

1. Set Condition: If the Left Rear Wheel Speed Sensor circuit fails the diagnostic test.

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1. CHECK FOR DTC C1020-LEFT REAR 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: C1020-LEFT REAR WHEEL SPEED SENSOR CIRCUIT? Yes Go To 2 . No Refer to the «ABS INTERMITTENT CONDITION»(ref-304475-S00851337582008111000000) diagnostic procedure.
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 Rear WSS, and Left Rear WSS harness connector. Is the Left Rear WSS or any of the connectors/terminals damaged? Yes Repair as necessary. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 3 .
3. CHECK (B4) LEFT REAR WSS 12 VOLT SUPPLY CIRCUIT VOLTAGE Disconnect the Left Rear WSS harness connector. Turn the ignition on. Measure the voltage of the (B4) Left Rear WSS 12 Volt Supply circuit. Is the voltage above 10.0 volts? Yes Go To 6 . No Go To 4 .
4. CHECK (B4) LEFT REAR WSS 12 VOLT SUPPLY 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. Using a 12-volt test light connected to 12-volts, probe the (B4) Left Rear WSS Supply circuit. Does the test light illuminate brightly? Yes Repair the (B4) Left Rear WSS Supply circuit for a short to ground. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 5 .
5. CHECK (B4) LEFT REAR WSS 12 VOLT SUPPLY 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 12-volt test light connected to 12-volts, probe the (B4) Left Rear WSS Supply circuit. Does the test light illuminate brightly? Yes Replace the Anti-Lock Brakes Module in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Repair the (B4) Left Rear WSS Supply circuit for an open. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .
6. CHECK (B3) LEFT REAR WSS SIGNAL CIRCUIT FOR A 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 (B3) Left Rear WSS Signal circuit. Does the test light illuminate brightly? Yes Repair the (B3) Left Rear WSS Signal circuit for a short to ground. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 7 .
7. CHECK (B3) LEFT REAR WSS SIGNAL CIRCUIT FOR AN OPEN Connect a jumper wire between ground and the (B3) Left Rear WSS Signal circuit in the Anti-Lock Brakes Module harness connector. Using a 12-volt test light connected to 12-volts, probe the (B3) Left Rear WSS Signal circuit. Does the test light illuminate brightly? Yes Go To 8 . No Repair the (B3) Left Rear WSS Signal circuit for an open. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .
8. CHECK (B3) LEFT REAR WSS SIGNAL CIRCUIT SHORT TO VOLTAGE Turn the ignition on. Remove all jumper wires. Measure the voltage between the (B3) Left Rear WSS Signal circuit and ground. Is the voltage above one volt? Yes Repair the (B3) Left Rear WSS Signal circuit for a short to voltage. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 9 .
9. CHECK (B3) LEFT REAR WSS SIGNAL CIRCUIT AND (B4) LEFT REAR WSS 12 VOLT SUPPLY CIRCUIT SHORTED TOGETHER Turn the ignition off. Measure the resistance between the (B3) Left Rear WSS Signal circuit and the (B4) Left Rear WSS Supply circuit. Is the resistance above 120 ohms? Yes Go To step 10 . No Repair the (B3) Left Rear WSS Signal circuit and the (B4) Left Rear WSS Supply circuit for a short together. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .
10. LEFT REAR WHEEL SPEED SENSOR Replace the Left Rear Wheel Speed Sensor in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . 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 40 km/h (25 mph) for set conditions to be meet. With the scan tool, read ABS DTCs. Did DTC C1020-LEFT REAR WHEEL SPEED SENSOR CIRCUIT reset? Yes Replace the Anti-Lock Brakes Module in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Test Complete.

1. When Monitored: With the ignition on.

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

1. When Monitored: With the ignition on.

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

1. When Monitored: With the ignition on.

1. Set Condition: If the Right Rear Wheel Speed Sensor circuit fails the diagnostic test.

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1. CHECK FOR DTC C102B-RIGHT REAR 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: C102B-RIGHT REAR WHEEL SPEED SENSOR CIRCUIT? Yes Go To 2 . No Refer to the «ABS INTERMITTENT CONDITION»(ref-304475-S00851337582008111000000) diagnostic procedure.
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 Rear WSS, and Right Rear WSS harness connector. Is the Right Rear WSS or any of the connectors/terminals damaged? Yes Repair as necessary. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 3 .
3. CHECK (B2) RIGHT REAR WSS 12 VOLT SUPPLY CIRCUIT VOLTAGE Disconnect the Right Rear WSS harness connector. Turn the ignition on. Measure the voltage of the (B2) Right Rear WSS 12 Volt Supply circuit. Is the voltage above 10.0 volts? Yes Go To 6 . No Go To 4 .
4. CHECK (B2) RIGHT REAR WSS 12 VOLT SUPPLY CIRCUIT FOR A SHORT TO GROUND Turn the ignition off. Disconnect the Right Rear WSS harness connector. Disconnect the Anti-Lock Brake Module harness connector. Using a 12-volt test light connected to 12-volts, probe the (B2) Right Rear WSS Supply circuit. Does the test light illuminate brightly? Yes Repair the (B2) Right Rear WSS Supply circuit for a short to ground. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 5 .
5. CHECK (B2) RIGHT REAR WSS 12 VOLT SUPPLY CIRCUIT FOR AN OPEN Connect a jumper wire between ground and the (B2) Right Rear WSS Supply circuit in the Anti-Lock Brakes Module harness connector. Using a 12-volt test light connected to 12-volts, probe the (B2) Right Rear WSS Supply circuit. Does the test light illuminate brightly? Yes Replace the Anti-Lock Brakes Module in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Repair the (B2) Right Rear WSS Supply circuit for an open. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .
6. CHECK (B1) RIGHT REAR WSS SIGNAL CIRCUIT FOR A 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 (B1) Right Rear WSS Signal circuit. Does the test light illuminate brightly? Yes Repair the (B1) Right Rear WSS Signal circuit for a short to ground. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 7 .
7. CHECK (B1) RIGHT REAR WSS SIGNAL CIRCUIT FOR AN OPEN Connect a jumper wire between ground and the (B1) Right Rear WSS Signal circuit in the Anti-Lock Brakes Module harness connector. Using a 12-volt test light connected to 12-volts, probe the (B1) Right Rear WSS Signal circuit. Does the test light illuminate brightly? Yes Go To 8 . No Repair the (B1) Right Rear WSS Signal circuit for an open. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .
8. CHECK (B1) RIGHT REAR WSS SIGNAL CIRCUIT SHORT TO VOLTAGE Turn the ignition on. Remove all jumper wires. Measure the voltage between the (B1) Right Rear WSS Signal circuit and ground. Is the voltage above one volt? Yes Repair the (B1) Right Rear WSS Signal circuit for a short to voltage. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 9 .
9. CHECK (B1) RIGHT REAR WSS SIGNAL CIRCUIT FOR A SHORT TO (B2) RIGHT REAR WSS 12 VOLT SUPPLY CIRCUIT Turn the ignition off. Measure the resistance between the (B1) Right Rear WSS Signal circuit and the (B2) Right Rear WSS Supply circuit. Is the resistance above 120 ohms? Yes Go To step 10 . No Repair the (B1) Right Rear WSS Signal circuit and the (B2) Right Rear WSS Supply circuit for a short together. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .
10. RIGHT REAR WHEEL SPEED SENSOR Replace the Right Rear Wheel Speed Sensor in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . 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 40 km/h (25 mph) for set conditions to be meet. With the scan tool, read ABS DTCs. Did DTC C102B-RIGHT REAR WHEEL SPEED SENSOR CIRCUIT reset? Yes Replace the Anti-Lock Brakes Module in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Test Complete.

1. When Monitored: With the ignition on.

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

1. When Monitored: With the ignition on.

1. Set Condition: When the Right Rear Wheel Speed Sensor (WSS) reading is different from the readings received from the other sensors at a vehicle speed above 40 km/h (25 mph). The Anti-Lock Brake Module compares WSS readings from side-to-side on an axle and front-to-rear.

1. When Monitored: With the ignition on.

1. Set Condition: When the Anti-Lock Brake Module detects periodic drops of a WSS signal.

1. When Monitored: With the ignition on.

1. Set Condition: When the Anti-Lock Brake Module detects periodic drops of a WSS signal.

1. When Monitored: With the ignition on.

1. Set Condition: When the Anti-Lock Brake Module detects periodic drops of a WSS signal.

1. When Monitored: With the ignition on.

1. Set Condition: When the Anti-Lock Brake Module detects periodic drops of a WSS signal.

1. When Monitored: During active ABS control.

1. Set Condition: If the Anti-Lock Brakes Module detects a pressure reduction phase and the following pressure hold phase is too long.

1. When Monitored: During active ABS control.

1. Set Condition: If the Anti-Lock Brakes Module detects a pressure reduction phase and the following pressure hold phase is too long.

1. When Monitored: During active ABS control.

1. Set Condition: If the Anti-Lock Brakes Module detects a pressure reduction phase and the following pressure hold phase is too long.

1. When Monitored: During active ABS control.

1. Set Condition: When the Anti-Lock Brakes Module detects a pressure reduction phase and the following pressure hold phase is too long.

1. When Monitored: When the ABS Pump Motor is activated.

1. Set Condition: The ABS detects low pump motor feedback voltage with actuation of the pump motor.

Scheme 54

Scheme 55

Scheme 56

1. CHECK FOR A DTC C1073-ABS PUMP MOTOR CONTROL CIRCUIT NOTE: This DTC must be active for the results of this test to be valid. If present, diagnose and repair DTC C2116-ABS PUMP MOTOR SUPPLY LOW VOLTAGE before diagnosing this DTC. Turn the ignition on. With the scan tool, record and erase DTCs. Cycle the ignition switch from off to on. Road test the vehicle over 40 km/h (25 mph). NOTE: Vehicle must be driven above 40 km/h (25 mph) for set conditions to be meet. With the scan tool, read DTCs. NOTE: The Anti-Lock Brake Module must sense ALL 4 wheels at 12 km/h (7.5 mph) before it will extinguish the ABS indicators. Does the scan tool display: C1073-ABS PUMP MOTOR CONTROL CIRCUIT? Yes Go To 2 . No Refer to the «ABS INTERMITTENT CONDITION»(ref-304475-S00851337582008111000000) diagnostic procedure.
2. INSPECT RELATED WIRING HARNESS, TERMINALS, & CONNECTORS Turn the ignition off. Visually inspect the related wiring harness. Look for any pinched, chafed, pierced, and partially broken wires. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, and corroded terminals. Were any problems found? Yes Repair as necessary. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 3 .
3. CHECK THE ABS PUMP MOTOR FUSED B+ FOR AN OPEN Turn the ignition off. Remove and visually inspect the ABS Pump Motor B+ fuse. Is the ABS Pump Motor B+ fuse open? Yes Go To 4 . No Go To 6 .
4. CHECK THE (A107) FUSED B(+) FOR A SHORT TO GROUND Turn the ignition off. Disconnect the Anti-Lock Brake Module harness connector. Using a 12-volt test light connected to 12-volts, probe the (A107) Fused B+ circuit. Does the test light illuminate brightly? Yes Repair the (A107) Fused B(+) circuit for a short to ground. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 5 .
5. CHECK THE (A107) FUSED B(+) CIRCUIT Turn the ignition off. Visually inspect the (A107) Fused B(+) circuit in the wiring harness. Look for any signs of intermittent short to ground. Is the wiring harness OK? Yes Go To 6 . No Repair the (A107) Fused B(+) circuit for a short to ground. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .
6. CHECK THE VOLTAGE ON THE (A107) FUSED B(+) CIRCUIT Turn the ignition off. Disconnect the Anti-Lock Brake Module harness connector. Measure the voltage of the (A107) Fused B(+) circuit in the Anti-Lock Brake Module harness connector. Is the voltage above 10 volts? Yes Go To 7 . No Repair the (A107) Fused B(+) circuit for an open. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .
7. CHECK THE (Z931) GROUND CIRCUITS FOR AN OPEN Using a 12-volt test light connected to 12-volts, probe the (Z931) ground circuit. Does the test light illuminate brightly? Yes Go To 8 . No Repair the high resistance in the affected circuit. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .
8. REPLACE ANTI-LOCK BRAKES MODULE & VERIFY IF DTC IS STILL ACTIVE Replace the Anti-Lock Brakes Module in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . Turn the ignition on. With the scan tool, read ABS DTCs. Does this DTC reset? Yes Replace the Hydraulic Control Unit in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .

1. When Monitored: Continuously.

1. Set Condition: A comparison between the tire circumference value contained in the EEPROM and the tire circumference value received on the CAN bus. Programmed value for tire size is not within acceptable range.

1. When Monitored: With the ignition on, but not during first run. Or, with low supply voltage. Or, if a Pressure Sensor fault is active.

1. Set Condition: If the Anti-Lock Brakes Module detects a mismatch between the Brake Test Signal (BTS) from the Pressure Sensor and the (B15) Brake Signal 1 circuit (Diesel).

Scheme 57

Scheme 58

Scheme 59

Scheme 60

1. VERIFY DTC IS ACTIVE NOTE: Diagnose and repair all Pressure Sensor and Voltage related DTCs and all Stop Lamp related DTCs and symptoms before diagnosing this DTC. Turn the ignition on. With the scan tool, read and record ABS DTCs. With the scan tool, read and record Environmental Data (EV Data). With the scan tool, erase ABS DTCs. Cycle the ignition switch. Press and release the brake pedal several times. With the scan tool, read ABS DTCs. Does this DTC reset? Yes Go To 2 . No Refer to the «ABS INTERMITTENT CONDITION»(ref-304475-S00851337582008111000000) diagnostic procedure.
2. INSPECT RELATED WIRING HARNESS, TERMINALS, & CONNECTORS Turn the ignition off. Visually inspect the related wiring harness. Look for any pinched, chafed, pierced, and partially broken wires. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, and corroded terminals. Were any problems found? Yes Repair as necessary. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 3 .
3. CHECK (B15) BRAKE SIGNAL 1 CIRCUIT FUNCTION WHILE DEPRESSING & RELEASING THE BRAKE PEDAL Disconnect the Anti-Lock Brakes Module harness connector. Turn the ignition on. Using a 12-volt test light connected to 12 volts, probe the (B15) Brake Signal 1 circuit in the Anti-Lock Brakes Module harness connector. Depress and release the brake pedal. Does the test light illumination toggle from off to on? Yes Go To 7 . No Go To 4 .
4. CHECK (B15) BRAKE SIGNAL 1 CIRCUIT FOR AN OPEN Turn the ignition off. Disconnect the Stop Lamp Switch harness connector. Measure the resistance of the (B15) Brake Signal 1 circuit between the Anti-Lock Brakes Module harness connector and the Stop Lamp Switch harness connector. Is the resistance below 5.0 ohms? Yes Go To 5 . No Repair the (B15) Brake Signal 1 circuit for an open. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .
5. CHECK (B15) BRAKE SIGNAL 1 CIRCUIT FOR A SHORT TO GROUND Turn the ignition off. Disconnect the Stop Lamp Switch harness connector. Measure the resistance of the (B15) Brake Signal 1 circuit between ground and the Anti-Lock Brakes Module harness connector. Is the resistance below 10k ohms? Yes Repair the (B15) Brake Switch Signal 1 circuit for a short to ground. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 6 .
6. CHECK (B15) BRAKE SIGNAL 1 CIRCUIT (GAS) FOR A OPEN GROUND Measure the resistance on the (Z912) Ground circuit and ground in the Stop Lamp Switch harness connector. Is the resistance below 5 ohms? Yes Replace the Stop Lamp Switch in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Repair the open in the (Z912) Ground circuit.
7. CHECK BRAKE PEDAL ADJUSTMENT Reconnect the Stop Lamp Switch harness connector. Using a 12-volt test light connected to 12 volts, backprobe the (B15) Brake Signal 1 circuit in the Stop Lamp Switch harness connector. Depress and release the brake pedal. Does the test light illumination toggle from off to on within 4-5 mm of brake pedal travel? Yes Replace the Anti-Lock Bakes Module in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Replace the Stop Lamp Switch in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .

1. When Monitored: When the vehicle is driven.

1. Set Condition: If the Anti-Lock Brakes Module detects an implausible signal from the Stop Lamp Switch.

1. When Monitored: With the ignition on.

1. Set Condition: When monitoring the Brake Lamp Activation Relay Control circuit the module detects a short to ground.

Scheme 61

Scheme 62

Scheme 63

1. CHECK FOR DTC C1090-ABS BRAKE LAMP CONTROL CIRCUIT LOW 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. Start Engine. Apply brake pedal firmly with at least 80 bar (1160 psi.). With the scan tool, read DTCs. Does the scan tool display: C1090-ABS BRAKE LAMP CONTROL CIRCUIT LOW? Yes Go To 2 . No Refer to the «ABS INTERMITTENT CONDITION»(ref-304475-S00851337582008111000000) diagnostic procedure.
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 and the Brake Lamp Activation Relay harness connector. Is the Anti-Lock Brake Module or any of the connectors/terminals damaged? Yes Repair as necessary. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 3 .
3. CHECK (B221) BRAKE LAMP ACTIVATION RELAY CONTROL SHORTED TO GROUND Turn the ignition off. Disconnect the Anti-Lock Brake Module Key on. Using a 12-volt test light connected to ground, probe the (B221) Brake Lamp Activation Relay Control Circuit at the Anti-Lock Brake Module harness connector. Does the test light illuminate brightly? Yes Replace the Anti-Lock Brake Module in accordance with the service information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 4 .
4. CHECK (A103) FUSED IGNITION SWITCH OUTPUT Turn the ignition off. Disconnect the Brake Lamp Activation Relay. Key on. Using a 12-volt test light connected to ground, probe the (A103) Fused Ignition Switch Output Circuit at the Brake Lamp Activation Relay harness connector. Does the test light illuminate brightly? Yes Go To 5 . No Check for open Fuse, if OK repair open or short to ground in the (A103) Fused Ignition Switch Output Circuit. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .
5. BRAKE LAMP ACTIVATION RELAY Turn the ignition off. Measure the resistance of the (B221) Brake Lamp Activation Relay Control Circuit between the Brake Lamp Activation relay and the Anti-Lock Brake Module. Is the resistance 5 ohms ? Yes Replace the Brake Lamp Activation Relay in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Repair open in the (B221) Brake Lamp Inhibit Relay Control circuit. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .

1. When Monitored: With the ignition on.
2. When Set: When monitoring the Brake Lamp Activation Relay Control circuit the module detects a short to B+.

Scheme 64

Scheme 65

1. CHECK FOR DTC C1091-ABS BRAKE LAMP CONTROL CIRCUIT HIGH 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. Start Engine. Apply brake pedal firmly with at least 80 bar (1160 psi.). With the scan tool, read DTCs. Does the scan tool display: C1091-ABS BRAKE LAMP CONTROL CIRCUIT HIGH? Yes Go To 2 . No Refer to the «ABS INTERMITTENT CONDITION»(ref-304475-S00851337582008111000000) diagnostic procedure.
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 and the Brake Lamp Activation Relay harness connector. Is the Anti-Lock Brake Module or any of the connectors/terminals damaged? Yes Repair as necessary. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 3 .
3. CHECK (B221) BRAKE LAMP ACTIVATION RELAY CONTROL SHORTED TO VOLTAGE Turn the ignition off. Disconnect the Anti-Lock Brake Module Disconnect the Brake Lamp Activation Relay. Turn the ignition on. Using a 12-volt test light connected to ground, probe the (B221) Brake Lamp Activation Relay Control Circuit at the Brake Lamp Activation Relay harness connector. Does the test light illuminate brightly? Yes Repair the short to voltage in the (B221) Brake Lamp Inhibit Relay Control circuit. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 4 .
4. BRAKE LAMP ACTIVATION RELAY Turn the ignition off. Measure the resistance across the relay between the (B221) Brake Lamp Activation Relay Control Circuit and the (A103) Fused Ignition switch Output. Is the resistance 75 ohms ±5 ohms? Yes Replace the Anti-Lock Brake Module in accordance with the service information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Replace the Brake Lamp Activation Relay in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .

1. When Monitored: Continuously, with ignition on, until vehicle speed exceeds 20 km/h (12.4 m.p.h.) for the first time, but not if the sensor voltage is out of range. Or, during diagnostic mode. Or, if the monitoring was inhibited by a corresponding diagnostics command.

1. Set Condition: If the measured acceleration signal is higher than 0.8 g for longer than the specified detection time.

1. When Monitored: Continuous monitoring.

1. Set Condition: If the Anti-Lock Brake Module detects that the calculated steering wheel angle and the actual steering angle disagree.

1. When Monitored: During the Drive Test.

1. Set Condition: This DTC may set with DTC C1231-DRIVE TEST: STEERING ANGLE SENSOR due to cycling of ignition several times or entering and exiting diagnostics several times.

1. When Monitored: With the ignition on.

1. Set Condition: When the Anti-Lock Brake Module indicates if engine management relevant for Automatic Yaw Control/Traction Control System control can be accomplished.

1. When Monitored: With the ignition on.

1. Set Condition: When the Anti-Lock Brake Module indicates that the Brake Pressure Sensor Signal is out of range.

1. When Monitored: With the ignition on.

1. Set Condition: When the Anti-Lock Brake Module indicates that the Brake Pressure Sensor Signal is out of range.

1. When Monitored: During the Drive Test.

1. Set Condition: If the Anti-Lock Brakes Module detects implausible Steering Angle Sensor data.

1. When Monitored: During the Drive Test.

1. Set Condition: If the Pressure Sensor fails to activate.

1. When Monitored: During the Drive Test.

1. Set Condition: If the Anti-Lock Brakes Module detects implausible Dynamics Sensor data.

1. When Monitored: During the Drive Test.

1. Set Condition: If the Anti-Lock Brakes Module detects a fault with the Steering Angle Sensor, the Pressure Sensor, or the Dynamics Sensor.

1. When Monitored: Once per ignition cycle.

1. Set Condition: If the calculated checksum does not match the stored checksum.

1. When Monitored: With the ignition on.

1. Set Condition: When the Anti-Lock Brake Module indicates ESP control lasting longer the 10 seconds.

1. When Monitored: With vehicle speed above 11 km/h (7 m.p.h.), but not if the sensor signal is invalid. Or, during skidding. Or, when driving in reverse.

1. Set Condition: If the Anti-Lock Brakes Module detects implausible Dynamics Sensor values.

1. When Monitored: With ignition on, but not if a checksum failure of the stored offset values is detected. Or, a CAN time-out failure is detected. Or, a failure is detected by the Steering Angle Sensor.

1. Set Condition: If the Anti-Lock Brakes Module detects that either the calculated steering wheel angle offset or the steering wheel angle signal measured output is out of range.

1. When Monitored: With ignition on, but not if a CAN time out failure is detected. Or, if a fault is detected by the Steering Angle Sensor.

1. Set Condition: If the Anti-Lock Brakes Module detects that the absolute value of the measured steering wheel angle is greater than 720 degrees.

1. When Monitored: Continuously, with ignition on and vehicle speed present.

1. Set Condition: If the measured acceleration and calculated signal differs or have opposite signs.

1. When Monitored: Once after ignition on.

1. Set Condition: If the stored zero point calibration value of the longitudinal acceleration sensor is invalid.

1. When Monitored: With the ignition on.

1. Set Condition: If the Anti-Lock Brakes Module detects system voltage is below 7.5 volts.

1. When Monitored: With the ignition on.

1. Set Condition: If the Anti-Lock Brakes Module detects system voltage is above 17 volts.

1. When Monitored: With the ignition on.

1. Set Condition: If the Dynamics Sensor status changes from initialized to not initialized due to low voltage on the (G4) Dynamics Sensor Supply circuit.

Scheme 66

Scheme 67

Scheme 68

Scheme 69

1. VERIFY DTC IS ACTIVE Turn the ignition on. With the scan tool, read and record ABS DTCs. With the scan tool, read and record Environmental Data (EV Data). With the scan tool, erase ABS DTCs. Cycle the ignition switch. With the scan tool, read ABS DTCs. Does this DTC reset? Yes Go To 2 . No Refer to the «ABS INTERMITTENT CONDITION»(ref-304475-S00851337582008111000000) diagnostic procedure.
2. INSPECT RELATED WIRING HARNESS, TERMINALS, & CONNECTORS Turn the ignition off. Check all related wiring for pinched, chafed, pierced, and partially broken wires. Check all related connectors for broken, bent, pushed out, and corroded terminals. Were any problems found? Yes Repair as necessary. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 3 .
3. CHECK (G4) DYNAMICS SENSOR SUPPLY CIRCUIT & (G94) DYNAMICS SENSOR GROUND CIRCUIT FUNCTION Disconnect the Dynamics Sensor harness connector. Turn the ignition on. Measure the voltage between the (G4) Dynamics Sensor Supply Circuit and the (G94) Dynamics Sensor Ground Circuit. Is the voltage above 10.5 volts? Yes Replace the Dynamics Sensor in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 4 .
4. CHECK (G4) DYNAMICS SENSOR SUPPLY CIRCUIT FOR HIGH RESISTANCE Turn the ignition off. Disconnect the Anti-Lock Brakes Module harness connector. Measure the resistance of the (G4) Dynamics Sensor Supply circuit between the Dynamics Sensor harness connector and the Anti-Lock Brakes Module harness connector. Is the resistance below 5.0 ohms? Yes Go To 5 . No Repair the (G4) Dynamics Sensor Supply circuit for high resistance. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .
5. CHECK (G94) DYNAMICS SENSOR GROUND CIRCUIT FOR HIGH RESISTANCE Measure the resistance of the (G94) Dynamics Sensor Ground circuit between the Dynamics Sensor harness connector and the Anti-Lock Brakes Module harness connector. Is the resistance below 5.0 ohms? Yes Go To 6 . No Repair the (G94) Dynamics Sensor Ground circuit for high resistance. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .
6. CHECK (G4) DYNAMICS SENSOR SUPPLY CIRCUIT FOR A SHORT TO OTHER ABS CIRCUITS Measure the resistance between the (G4) Dynamics Sensor Supply circuit and the surrounding circuits in the Anti-Lock Brakes Module harness connector. Is the resistance below 10k ohms on any of the circuits? Yes Repair all circuits with a resistance below 10k ohms for a short to the (G4) Dynamics Sensor Supply circuit. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Replace the Anti-Lock Brakes Module in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .

1. When Monitored: Upon ignition on, prior to switching the (G4) Dynamics Sensor Supply circuit power on.

1. Set Condition: If the Anti-Lock Brakes Module detects voltage on the (G4) Dynamics Sensor Supply circuit when the circuit's power is turned off.

Scheme 70

1. VERIFY DTC IS ACTIVE Turn the ignition on. With the scan tool, read and record ABS DTCs. With the scan tool, read and record Environmental Data (EV Data). With the scan tool, erase ABS DTCs. Cycle the ignition switch. With the scan tool, read ABS DTCs. Does this DTC reset? Yes Go To 2 . No Refer to the «ABS INTERMITTENT CONDITION»(ref-304475-S00851337582008111000000) diagnostic procedure.
2. INSPECT RELATED WIRING HARNESS, TERMINALS, & CONNECTORS Turn the ignition off. Check all related wiring for pinched, chafed, pierced, and partially broken wires. Check all related connectors for broken, bent, pushed out, and corroded terminals. Were any problems found? Yes Repair as necessary. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 3 .
3. CHECK (G4) DYNAMICS SENSOR SUPPLY CIRCUIT SHORT FOR A SHORT TO VOLTAGE Disconnect the Anti-Lock Brakes Module harness connector. Turn the ignition on. Measure the voltage of the (G4) Dynamics Sensor Supply Circuit. Is the voltage above 0.2 volts? Yes Repair the (G4) Dynamics Sensor Supply Circuit for a short to voltage. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Replace the Anti-Lock Brakes Module in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .

1. When Monitored: With the ignition on and the ABS Pump Motor deactivated, but not if supply voltage faults are detected. Or, if the control is switched off.

1. Set Condition: If the Anti-Lock Brakes Module detects either a low voltage condition when the ABS Pump Motor is activated or deactivated or a high voltage condition when the ABS Pump Motor is deactivated.

Scheme 71

Scheme 72

1. CHECK FOR A DTC C2116-ABS PUMP MOTOR SUPPLY LOW VOLTAGE 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. Road test the vehicle over 40 km/h (25 mph). NOTE: Vehicle must be driven above 40 km/h (25 mph) for set conditions to be meet. With the scan tool, read DTCs. Does the scan tool display: C2116-ABS PUMP MOTOR SUPPLY LOW VOLTAGE? Yes Go To 2 . No Refer to the «ABS INTERMITTENT CONDITION»(ref-304475-S00851337582008111000000) diagnostic procedure.
2. INSPECT RELATED WIRING HARNESS, TERMINALS, & CONNECTORS Turn the ignition off. Visually inspect the Anti-Lock Brakes Module harness connector and wiring harness for damage. Check all related wiring for pinched, chafed, pierced, and partially broken wires. Check all related connectors for broken, bent, pushed out, and corroded terminals. Were any problems found? Yes Repair as necessary. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 3 .
3. CHECK ABS PUMP MOTOR FUSE Remove and visually inspect the ABS Pump Motor fuse. Is the fuse open? Yes Go To 4 . No Go To 5 .
4. CHECK (A107) FUSED B(+) CIRCUIT FOR A SHORT TO GROUND Disconnect the Anti-Lock Brakes Module harness connector. Measure the resistance of the (A107) Fused B(+) circuit between ground and the Anti-Lock Brakes Module harness connector. Is the resistance below 10k ohms? Yes Repair the (A107) Fused B(+) circuit for a short to ground. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 5 .
5. CHECK (A107) FUSED B(+) CIRCUIT FOR AN OPEN OR HIGH RESISTANCE Replace the ABS Pump Motor fuse. Using a 12-volt test light connected to ground, probe the (A107) Fused B(+) circuit. NOTE: The test light should illuminate brightly. Compare the brightness to that of a direct connection to the battery. Does the test light illuminate brightly? Yes Go To 6 . No Repair the (A107) Fused B(+) circuit for an open or high resistance. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .
6. CHECK THE (A107) FUSED B(+) CIRCUIT Turn the ignition off. Visually inspect the (A107) Fused B(+) circuit in the wiring harness. Look for any signs of intermittent short to ground. Is the wiring harness OK? Yes Go To 7 . No Repair the (A107) Fused B(+) circuit for a short to ground. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .
7. REPLACE ANTI-LOCK BRAKES MODULE & VERIFY IF DTC IS STILL ACTIVE Replace the Anti-Lock Brakes Module in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . Turn the ignition on. With the scan tool, read ABS DTCs. Does this DTC reset? Yes Replace the Hydraulic Control Unit in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .

1. When Monitored: Ignition on. The Anti-Lock Brake Module monitors its internal microprocessors for correct operation.

1. Set Condition: If the Anti-lock brake module detects an internal fault, the DTC is set.

1. When Monitored: At power up, VIN is read off the CAN bus.

1. Set Condition: The VIN stored in the ABS does not match the VIN read off of the CAN bus.

1. When Monitored: Continuously, with ignition on, but not if the sensor voltage is out of range. Or, during diagnostic mode. Or, if the monitoring was inhibited by a corresponding diagnostics command. Or, if the vehicle speed has exceeded 20 km/h (12.4 m.p.h.) during the actual ignition cycle. Or, if at least one over spinning wheel is detected. Or, if one of the control functions is active.

1. Set Condition: If the Anti-Lock Brakes Module detects that the Lateral Sensor signal is out of range.

1. When Monitored: With ignition on, but not if supply voltage faults are detected.

1. Set Condition: If the Anti-Lock Brakes Module detects that the Steering Angle Sensor sends an internal failure message.

1. When Monitored: With the ignition on.

1. Set Condition: When the Anti-Lock Brake Module detects the signal from the gateway module relevant for vehicle characteristic is missing or does not match for a period greater than the specified fault duration.

1. When Monitored: With the ignition on.

1. Set Condition: The TIPM detects a short in either CAN C Bus circuit.

Scheme 73

Scheme 74

Scheme 75

Scheme 76

Scheme 77

1. TEST FOR INTERMITTENT CONDITION Turn the ignition on. With the scan tool, record and erase TIPM DTC's. Cycle the ignition from on to off 3 times. Turn the ignition on. With the scan tool, read active TIPM DTC's. Does the scan tool display U0002-CAN C BUS OFF PERFORMANCE as active? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
2. ANTI-LOCK BRAKE MODULE - INTERNAL SHORT Turn the ignition off. Disconnect the Anti-Lock Brake Module harness connector. Turn the ignition on. With the scan tool, record and erase TIPM DTC's. Cycle the ignition from on to off 3 times. Turn the ignition on. With the scan tool, read active TIPM DTC's. Does the scan tool display U0002-CAN C BUS OFF PERFORMANCE as active? Yes Go To 3 . No Inspect the wiring and connectors for damage or shorted circuits. If OK, replace the Anti-Lock Brake Module in accordance with the service information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .
3. POWERTRAIN CONTROL MODULE - INTERNAL SHORT Turn the ignition off. Disconnect the Powertrain Control Module C1 harness connector. Turn the ignition on. With the scan tool, record and erase TIPM DTC's. Cycle the ignition from on to off 3 times. Turn the ignition on. With the scan tool, read active TIPM DTC's. Does the scan tool display U0002-CAN C BUS OFF PERFORMANCE as active? Yes, with Floor Shift Go To 4 . Yes, with Column Shift Go To 5 . No Inspect the wiring and connectors for damage or shorted circuits. If OK, replace and program the Powertrain Control Module in accordance with the service information. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000) .
4. SHIFTER LEVER ASSEMBLY (NAG1 ONLY)- INTERNAL SHORT Turn the ignition off. NOTE: If the vehicle is not equipped with a NAG1 controller then skip this step. Disconnect the Shifter Lever Assembly harness connector. Turn the ignition on. With the scan tool, record and erase TIPM DTC's. Cycle the ignition from on to off 3 times. Turn the ignition on. With the scan tool, read active TIPM DTC's. Does the scan tool display U0002-CAN C BUS OFF PERFORMANCE as active? Yes Go To 6 . No Inspect the wiring and connectors for damage or shorted circuits. If OK, replace and program the Shifter Lever Assembly in accordance with the service information. Perform «NAG1 TRANSMISSION VERIFICATION TEST»(ref-304549-S36649155802008111000000) .
5. ELECTRONIC SHIFT MODULE (COLUMN NAG1)- INTERNAL SHORT Turn the ignition off. NOTE: If the vehicle is not equipped with a NAG1 controller then skip this step. Disconnect the Electronic Shift Module harness connector. Turn the ignition on. With the scan tool, record and erase TIPM DTC's. Cycle the ignition from on to off 3 times. Turn the ignition on. With the scan tool, read active TIPM DTC's. Does the scan tool display U0002-CAN C BUS OFF PERFORMANCE as active? Yes Go To 6 . No Inspect the wiring and connectors for damage or shorted circuits. If OK, replace and program the Electronic Shift Module in accordance with the service information. Perform «NAG1 TRANSMISSION VERIFICATION TEST»(ref-304549-S36649155802008111000000) .
6. TRANSMISSION CONTROL MODULE (NAG1 ONLY)- INTERNAL SHORT Turn the ignition off. NOTE: If the vehicle is not equipped with a NAG1 controller then skip this step. Disconnect the Transmission Control Module C2 harness connector. Turn the ignition on. With the scan tool, record and erase TIPM DTC's. Cycle the ignition from on to off 3 times. Turn the ignition on. With the scan tool, read active TIPM DTC's. Does the scan tool display U0002-CAN C BUS OFF PERFORMANCE as active? Yes Go To 7 . No Inspect the wiring and connectors for damage or shorted circuits. If OK, replace and program the Transmission Control Module in accordance with the service information. Perform «NAG1 TRANSMISSION VERIFICATION TEST»(ref-304549-S36649155802008111000000) .
7. ENGINE CONTROL MODULE (DIESEL)- INTERNAL SHORT Turn the ignition off. Disconnect the Engine Control Module C2 harness connector. Turn the ignition on. With the scan tool, record and erase TIPM DTC's. Cycle the ignition from on to off 3 times. Turn the ignition on. With the scan tool, read active TIPM DTC's. Does the scan tool display U0002-CAN C BUS OFF PERFORMANCE as active? Yes Go To 8 . No Inspect the wiring and connectors for damage or shorted circuits. If OK, replace and program the Engine Control Module in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304477-S32224544052008111000000) .
8. STEERING CONTROL MODULE - INTERNAL SHORT Turn the ignition off. Remove the Steering Control Module. Turn the ignition on. With the scan tool, record and erase TIPM DTC's. Cycle the ignition from on to off 3 times. Turn the ignition on. With the scan tool, read active TIPM DTC's. Does the scan tool display U0002-CAN C BUS OFF PERFORMANCE as active? Yes Go To 9 . No Inspect the wiring and connectors for damage or shorted circuits. If OK, replace and program the Steering Control Module in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304477-S32224544052008111000000) .
9. (D65) CAN C BUS (+) CIRCUIT SHORTED TO VOLTAGE Turn the ignition off. Disconnect the Totally Integrated Power Module C1 harness connector. Turn the ignition on. Measure the voltage between the (D65) CAN C Bus (+) circuit and ground. Is there any voltage present? Yes Repair the (D65) CAN C Bus (+) circuit for a short to voltage. Perform «BODY VERIFICATION TEST - VER 1»(ref-304477-S32224544052008111000000) . No Go To 10 .
10. (D64) CAN C BUS (-) CIRCUIT SHORTED TO VOLTAGE Measure the voltage between the (D64) CAN C Bus (-) circuit and ground. Is there any voltage present? Yes Repair the (D64) CAN C Bus (-) circuit for a short to voltage. Perform «BODY VERIFICATION TEST - VER 1»(ref-304477-S32224544052008111000000) . No Go To 11 .
11. (D65) CAN C BUS (+) CIRCUIT SHORTED TO GROUND Turn the ignition off. Measure the resistance between ground and the (D65) CAN C Bus (+) circuit. Is any resistance present? Yes Repair the (D65) CAN C Bus (+) circuit for a short to ground. Perform «BODY VERIFICATION TEST - VER 1»(ref-304477-S32224544052008111000000) . No Go To 12 .
12. (D64) CAN C BUS (-) CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (D64) CAN C Bus (-) circuit. Is any resistance present? Yes Repair the (D64) CAN C Bus (-) circuit for a short to ground. Perform «BODY VERIFICATION TEST - VER 1»(ref-304477-S32224544052008111000000) . No Go To 13 .
13. (D65) CAN C BUS (+) CIRCUIT SHORTED TO (D64) CAN C BUS (-) CIRCUIT Measure the resistance between the (D65) CAN C Bus (+) circuit and the (D64) CAN C Bus (-) circuit. Is any resistance present? Yes Repair the (D65) CAN C Bus (+) circuit for a short to the (D64) CAN C Bus (-) circuit. Perform «BODY VERIFICATION TEST - VER 1»(ref-304477-S32224544052008111000000) . No Inspect the wiring and connectors for damage or shorted circuits. If OK, replace and program the Totally Integrated Power Module in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304477-S32224544052008111000000) .

1. When Monitored: With the ignition on Battery voltage between 10 and 16 volts IOD fuse installed

1. Set Condition: If the Anti-Lock Brakes Module fails to receive bus messages from the ECM or PCM for approximately 500 ms.

1. When Monitored: With the ignition on Battery voltage between 10 and 16 volts IOD fuse installed

1. Set Condition: If the Anti-Lock Brakes Module fails to receive bus messages from the TCM for approximately 500 ms.

1. When Monitored: With the ignition on.

1. Set Condition: If the Anti-Lock Brakes Module fails to receive bus messages from the Dynamics Sensor.

Scheme 78

Scheme 79

Scheme 80

Scheme 81

Scheme 82

Scheme 83

Scheme 84

Scheme 85

Scheme 86

Scheme 87

1. VERIFY DTC IS ACTIVE NOTE: If present, diagnose and repair DTC «C2114-DYNAMICS SENSOR SUPPLY VOLTAGE LOW»(ref-304475-S11011244612008111000000) or DTC «C2115-DYNAMICS SENSOR SUPPLY VOLTAGE HIGH»(ref-304475-S34627904772008111000000) before proceeding. Turn the ignition on. With the scan tool, read and record ABS DTCs. With the scan tool, read and record Environmental Data (EV Data). With the scan tool, erase ABS DTCs. Cycle the ignition switch. With the scan tool, read ABS DTCs. Does this DTC reset? Yes Go To 2 . No Refer to the «ABS INTERMITTENT CONDITION»(ref-304475-S00851337582008111000000) diagnostic procedure.
2. INSPECT RELATED WIRING HARNESS, TERMINALS, & CONNECTORS Visually inspect the related wiring harness. Look for any pinched, chafed, pierced, and partially broken wires. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, and corroded terminals. Were any problems found? Yes Repair as necessary. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 3 .
3. CHECK THE VOLTAGE ON THE (G4) DYNAMICS SENSOR SUPPLY CIRCUIT Turn the ignition off. Disconnect the Dynamics Sensor harness connector. Turn the ignition on. Measure the voltage of the (G4) Dynamics Sensor Supply Circuit. Is the voltage above 10 volts? Yes Go To 7 . No Go To 4 .
4. (G4) DYNAMICS SENSOR SUPPLY CIRCUIT SHORT TO GROUND Turn the ignition off. Disconnect the Anti-Lock Brake Module harness connector. Measure the resistance between ground and the (G4) Dynamics Sensor Supply circuit. Is the resistance below 5.0 ohms? Yes Repair the (G4) Dynamics Sensor Supply circuit for a short to ground. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 5 .
5. (G4) DYNAMICS SENSOR SUPPLY CIRCUIT SHORT TO VOLTAGE Turn the ignition on. Measure the voltage of the (G4) Dynamics Sensor Supply circuit. Is there any voltage present? Yes Repair the (G4) Dynamics Sensor Supply circuit for a short to voltage. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 6 .
6. (G4) DYNAMICS SENSOR SUPPLY CIRCUIT OPEN Turn the ignition off. Measure the resistance of the (G4) Dynamics Sensor Supply circuit. Is the resistance below 5.0 ohms? Yes Replace the Anti-Lock Brake Module in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Repair the (G4) Dynamics Sensor Supply circuit for an open. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .
7. CHECK THE RESISTANCE BETWEEN THE (G94) DYNAMICS SENSOR GROUND CIRCUIT AND GROUND Disconnect the Dynamics Sensor harness connector. Measure the resistance between the (G94) Dynamics Sensor Ground Circuit and Ground. Is the resistance below 5.0 ohm? Yes Go To 10 . No Go To 8 .
8. (G94) DYNAMICS SENSOR GROUND CIRCUIT SHORT TO VOLTAGE Turn the ignition off. Disconnect the Anti-Lock Brake Module harness connector. Turn the ignition on. Measure the voltage of the (G94) Dynamics Sensor Ground circuit. Is there any voltage present? Yes Repair the (G94) Dynamics Sensor Ground circuit for a short to voltage. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 9 .
9. (G94) DYNAMICS SENSOR GROUND CIRCUIT OPEN Turn the ignition off. Measure the resistance of the (G94) Dynamics Sensor Return circuit. Is the resistance below 5.0 ohms? Yes Replace the Anti-Lock Brake Module in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Repair the (G94) Dynamics Sensor Ground circuit for an open. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .
10. CHECK THE DYNAMICS SENSOR OUTPUT CAUTION: All previously removed connectors must be connected before test driving the vehicle. CAUTION: Ensure brake capability is available before road testing. Have an assistant test drive the vehicle while monitoring the Dynamics Sensor operation. Was the Lateral Sensor output between 0.02 G to 0.16 G and the Yaw Sensor between 1.30° to 5.70° Yes Replace the Anti-Lock Brake Module in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 11 .
11. CHECK THE (D52) DYNAMICS SENSOR HIGH DATA LINK CIRCUIT FOR A SHORT TO VOLTAGE Disconnect the Anti-Lock Brakes Module harness connector. Disconnect the Dynamics Sensor harness connector. Turn the ignition on. Measure the voltage of the (D52) Dynamics Sensor High Data Link circuit. Is there any voltage present? Yes Repair the (D52) Dynamics Sensor High Data Link circuit for a short to voltage. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 12 .
12. CHECK THE (D52) DYNAMICS SENSOR HIGH DATA LINK CIRCUIT FOR A SHORT TO GROUND Turn the ignition off. Measure the resistance of the (D52) Dynamics Sensor High Data Link circuit between ground and the Dynamics Sensor harness connector. Is the resistance below 5.0 ohms? Yes Repair the (D52) Dynamics Sensor High Data Link circuit for a short to ground. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 13 .
13. CHECK THE (D52) DYNAMICS SENSOR HIGH DATA LINK CIRCUIT FOR AN OPEN Measure the resistance of the (D52) Dynamics Sensor High Data Link circuit between the Dynamics Sensor harness connector and the Anti-Lock Brakes Module harness connector. Is the resistance below 5.0 ohms? Yes Go To 14 . No Repair the (D52) Dynamics Sensor High Data Link circuit for an open. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .
14. CHECK THE (D51) DYNAMICS SENSOR LOW DATA LINK CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition on. Measure the voltage of the (D51) Dynamics Sensor Low Data Link circuit. Is there any voltage present? Yes Repair the (D51) Dynamics Sensor Low Data Link circuit for a short to voltage. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 15 .
15. CHECK THE (D51) DYNAMICS SENSOR LOW DATA LINK CIRCUIT FOR A SHORT TO GROUND Turn the ignition off. Measure the resistance of the (D51) Dynamics Sensor Low Data Link circuit between ground and the Dynamics Sensor harness connector. Is the resistance below 5.0 ohms? Yes Repair the (D51) Dynamics Sensor Low Data Link circuit for a short to ground. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 16 .
16. CHECK THE (D51) DYNAMICS SENSOR LOW DATA LINK CIRCUIT FOR AN OPEN Measure the resistance of the (D51) Dynamics Sensor Low Data Link circuit between the Dynamics Sensor harness connector and the Anti-Lock Brakes Module harness connector. Is the resistance below 5.0 ohms? Yes Replace the Dynamics Sensor in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Repair the (D51) Dynamics Sensor Low Data Link circuit for an open. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .

1. When Monitored: With the ignition on Battery voltage between 10 and 16 volts IOD fuse installed

1. Set Condition: If the Anti-Lock Brakes Module fails to receive bus messages from the Steering Angle Sensor for approximately 500 ms.

Scheme 88

Scheme 89

1. VERIFY DTC IS ACTIVE NOTE: Ensure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding. Turn the ignition on. With the scan tool, read and record ABS DTCs. With the scan tool, read and record Environmental Data (EV Data). With the scan tool, erase ABS DTCs. Cycle the ignition switch. With the scan tool, read ABS DTCs. Does this DTC reset? Yes Go To 2 . 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. Refer to the «ABS INTERMITTENT CONDITION»(ref-304475-S00851337582008111000000) .
2. CHECK FOR ANY ACTIVE STEERING ANGLE SENSOR DTCs With the scan tool, read all active DTCs. Does the scan tool display any active Steering Angle Sensor DTCs? Yes Diagnose and repair the DTC(s). Refer to appropriate ELECTRICAL DIAGNOSTICS article . Perform «BODY VERIFICATION TEST - VER 1»(ref-304477-S32224544052008111000000) . No Go To 3 .
3. VERIFY THAT THE STEERING ANGLE SENSOR IS ACTIVE ON THE BUS With the scan tool, select ECU View. Verify that the Steering Angle Sensor is active on the bus. Is the Steering Angle Sensor active on the bus? Yes Replace the Anti-Lock Brakes Module in accordance with the service information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 4 .
4. CHECK THE WIRING HARNESS, TERMINALS, AND CONNECTORS Check the Steering Angle Sensor installation. Visually inspect the related wiring harness. Look for any bruised, chafed, pierced, or partially broken wires. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals. Were any problems found? Yes Repair as necessary. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Go To 5 .
5. CHECK THE VOLTAGE OF THE STEERING CONTROL MODULE (A913) FUSED B(+) CIRCUIT Turn the ignition off. Disconnect the Steering Control Module harness connector. Turn the ignition on. Measure the voltage of the (A913) Fused B(+) circuit. Is the voltage above 10 volts? Yes Go To 6 . No Repair the (A913) Fused B(+) circuit for an open. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .
6. CHECK THE RESISTANCE OF THE STEERING CONTROL MODULE (Z910) GROUND CIRCUIT Turn the ignition off. Disconnect the Steering Control Module harness connector. Measure resistance between the (Z910) Ground circuit and ground. Is the resistance below 5.0 ohms? Yes Replace the Steering Control Module in accordance with the Service Information. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) . No Repair the (Z910) Ground circuit for an open. Perform «ABS VERIFICATION TEST»(ref-304475-S20609067312008111000000) .

1. When Monitored: With the ignition on Battery voltage between 10 and 16 volts IOD fuse installed TIPM is configured correctly

1. Set Condition: Bus messages not received from the Totally Integrated Power Module for approximately 2 to 5 seconds.

1. When Monitored: With the ignition on Battery voltage between 10 and 16 volts IOD fuse installed

1. Set Condition: If the Anti-Lock Brakes Module either fails to receive bus messages from the Totally Integrated power Module (TIPM) for approximately 500 ms, or it receives invalid messages from the TIPM, or it detects messages from the TIPM are of improper data length.

1. When Monitored: Continuously with the ignition on, one valid CAN message received at least once, and no U0002-CAN C Bus Off Performance DTC present.

1. Set Condition: When the Anti-Lock Brake Module detects an incorrect CAN message from the Engine Module.

1. When Monitored: With ignition on, but not if low voltage is detected. Or, if a CAN Bus off event is detected.

1. Set Condition: If the Anti-Lock Brakes Module detects either the sequence or integrity of the Steering Angle Sensor messages is invalid.

1. When Monitored: With the ignition on.

1. Set Condition: If the Anti-Lock Brakes Module detects too many CAN Bus off events on the Dynamics Sensor Data Link circuits.

1. When Monitored: With the ignition on.

1. Set Condition: If the Anti-Lock Brakes Module detects an invalid CAN message from the Dynamics Sensor.

1. When Monitored: Once per ignition cycle, but not during cranking.

1. Set Condition: If the Anti-Lock Brakes Module either fails to receive vehicle configuration data from the Engine Control Module (ECM) or Powertrain Control Module (PCM) or the configuration data it receives from the ECM or PCM is different than that received during the previous ignition cycle.

1. When Monitored: Continuously, with ignition on.

1. Set Condition: If the Anti-Lock Brakes Module detects bus messages from the Engine Control Module (ECM) or Powertrain Control Module (PCM) are of improper data length.

1. When Monitored: Continuously, with ignition on.

1. Set Condition: If the Anti-Lock Brakes Module detects bus messages from the Transmission Control Module (TCM) are of improper data length.

1. When Monitored: Continuously with the ignition on.

1. Set Condition: When the Anti-Lock Brake Module detects an incorrect CAN message from the Totally Integrated Power Module (TIPM).

1. When Monitored: The Adjustable Pedal Motor is in active operation.

1. Set Condition: The Memory Seat Module detects a low signal circuit voltage that is not within voltage specification from the Adjustable Pedal Sensor.

Scheme 90

Scheme 91

Scheme 92

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Scheme 94

1. CHECK FOR DTC B1D56-ADJUSTABLE PEDAL SENSOR CIRCUIT LOW 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 DTC's. Cycle the ignition switch from off to on. Cycle the Adjustable Pedals Switch forward and rearward. With the scan tool, read DTC's. Does the scan tool display: B1D56-ADJUSTABLE PEDAL SENSOR CIRCUIT LOW? Yes Go To 2 . No Refer to the «APS-INTERMITTENT CONDITION»(ref-304475-S02745785572008111000000) .
2. CHECK CONNECTOR/TERMINAL FOR DAMAGE NOTE: Check all terminals for broken, bent, pushed out, or corroded terminals. Turn the ignition off. Inspect the Seat Memory Module harness connector, Adjustable Pedals Sensor, and Adjustable Pedals Sensor harness connector. Is the Adjustable Pedals Sensor or any of the connectors/terminals damaged? Yes Repair as necessary. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) . No Go To 3 .
3. (G13) ADJUSTABLE PEDALS SENSOR SUPPLY CIRCUIT VOLTAGE Disconnect the Seat Memory Module harness connector. Disconnect the Adjustable Pedals Sensor harness connector. Using a 12-volt test light connected to 12-volts, probe the (G13) Adjustable Pedals Sensor Supply circuit at the Memory Seat Module C1 harness connector. Does the test light illuminate brightly? Yes Repair the (G13) Adjustable Pedals Sensor Supply circuit for a short to ground. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) . No Go To 4 .
4. (G13) ADJUSTABLE PEDALS SENSOR SUPPLY CIRCUIT SHORT TO GROUND Connect a jumper wire between the (G13) Adjustable Pedals Sensor Supply circuit and ground at the Adjustable Pedal Sensor harness connector. Using a 12-volt test light connected to 12-volts, probe the (G13) Adjustable Pedals Sensor Supply circuit at the Memory Seat Module C1 harness connector. Does the test light illuminate brightly Yes Go To 5 . No Repair the (G13) Adjustable Pedals Sensor Supply circuit for an open. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) .
5. (G14) ADJUSTABLE PEDALS SENSOR SUPPLY CIRCUIT OPEN Using a 12-volt test light connected to 12-volts, probe the (G14) Adjustable Pedals Sensor Signal circuit at the Memory Seat Module C1 harness connector. Does the test light illuminate brightly? Yes Repair the (G14) Adjustable Pedals Sensor Signal circuit for a short to ground. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) . No Go To 6 .
6. (G14) ADJUSTABLE PEDALS SENSOR SIGNAL CIRCUIT SHORT TO GROUND Connect a jumper wire between the (G14) Adjustable Pedals Sensor Signal circuit and ground at the Adjustable Pedal Sensor harness connector. Using a 12-volt test light connected to 12-volts, probe the (G14) Adjustable Pedals Sensor Signal circuit at the Memory Seat Module C1 harness connector. Does the test light illuminate brightly? Yes Go To 7 . No Repair the (G14) Adjustable Pedals Sensor Signal circuit for an open. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) .
7. (G13) ADJUSTABLE PEDALS SENSOR SIGNAL CIRCUIT FOR AN OPEN Measure the voltage between the (G13) Adjustable Pedals Sensor Supply circuit and ground at the Adjustable Pedal Sensor harness connector. Is the voltage between 4.0 and 5.0 volts? Yes Go To 8 . No Replace and reprogram the Seat Memory Module in accordance with the Service Information. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) .
8. (G14) ADJUSTABLE PEDALS SENSOR SIGNAL CIRCUIT VOLTAGE Reconnect Adjustable Pedal Sensor harness connector. Turn ignition on. Measure the voltage of the (G14) Adjustable Pedals Sensor Signal circuit in the Seat Memory Module C1 harness connector. Is the voltage above 0.5 volts? Yes Replace the Seat Memory Module in accordance with the Service Information. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) . No Replace the Adjustable Pedals Sensor in accordance with the Service Information. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) .

1. When Monitored: The Adjustable Pedal Motor is in active operation.

1. Set Condition: The Memory Seat Module detects a high signal circuit voltage that is not within voltage specification from the Adjustable Pedal Sensor.

Scheme 95

Scheme 96

Scheme 97

1. DTC IS ACTIVE Turn the ignition on. With the scan tool, select view DTCs. Record all DTC information. With the scan tool, clear stored DTCs. Cycle the ignition switch off then on. Move the Adjustable Pedals Switch forward and rearward several times. With the scan tool, select view DTCs. Is the status active for this DTC? Yes Go To 2 . No Refer to the «APS-INTERMITTENT CONDITION»(ref-304475-S02745785572008111000000) .
2. WIRING HARNESS CONNECTOR/TERMINALS Turn the ignition off. Disconnect the Memory Seat Module harness connector. Disconnect the Adjustable Pedals Sensor harness connector. Inspect the wiring harness, connectors and terminals. Were any problems found? Yes Repair as necessary. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) . No Go To 3 .
3. (G13) ADJUSTABLE PEDALS SENSOR SUPPLY CIRCUIT SHORT TO VOLTAGE Turn the ignition on. Measure the voltage of the (G13) Adjustable Pedals Sensor Supply circuit and ground at the Memory Seat Module C1 harness connector. Is there any voltage present? Yes Repair the (G13) Adjustable Pedals Sensor Supply circuit for a short to voltage. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) . No Go To 4 .
4. (G14) ADJUSTABLE PEDALS SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE Measure the voltage of the (G14) Adjustable Pedals Sensor Signal circuit and ground at the Memory Seat Module C1 harness connector. Is there any voltage present? Yes Repair the (G14) Adjustable Pedals Sensor Signal circuit for a short to voltage. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) . No Go To 5 .
5. (G14) ADJUSTABLE PEDALS SENSOR SIGNAL CIRCUIT VOLTAGE Turn the ignition off. Reconnect all connectors. Measure the voltage of the (G14) Adjustable Pedals Sensor Signal circuit at the Memory Seat Module C1 harness connector. Is the voltage below 4.0 volts? Yes Replace and reprogram the Memory Seat Module in accordance with the Service Information. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) . No Replace the Adjustable Pedals Sensor in accordance with the Service Information. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) .

1. When Monitored: The Adjustable Pedals Switch is in active operation.

1. Set Condition: The Memory Seat Module detects an activation of both pedal switches at the same time.

Scheme 98

Scheme 99

Scheme 100

1. DTC IS ACTIVE NOTE: This DTC must be active for the results of this test to be valid. Turn the ignition on. With the scan tool, select view DTCs. Record all DTC information. With the scan tool, clear stored DTCs. Cycle the ignition switch off then on. Move the Adjustable Pedals Switch forward and rearward several times. With the scan tool, select view DTCs. Is the status active for this DTC? Yes Go To 2 . No Refer to the «APS-INTERMITTENT CONDITION»(ref-304475-S02745785572008111000000) .
2. WIRING HARNESS CONNECTOR/TERMINALS Turn the ignition off. Disconnect the Memory Seat Module harness connector. Disconnect the Adjustable Pedals Switch harness connector. Inspect the wiring harness, connectors and terminals. Were any problems found? Yes Repair as necessary. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) . No Go To 3 .
3. (Q103) ADJUSTABLE PEDALS SWITCH REARWARD CIRCUIT SHORT TO GROUND Disconnect the Memory Seat Module harness connector. Disconnect the Adjustable Pedals Switch harness connector. Using a 12-volt test light connected to 12-volts, probe the (Q103) Adjustable Pedals Switch Rearward circuit at the Memory Seat Module C5 harness connector. Does the test light illuminate brightly? Yes Repair the (Q103) Adjustable Pedals Switch Rearward circuit for a short to ground. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) . No Go To 4 .
4. (Q102) ADJUSTABLE PEDALS SWITCH FORWARD CIRCUIT SHORT TO GROUND Using a 12-volt test light connected to 12-volts, probe the (Q102) Adjustable Pedals Switch Rearward circuit at the Memory Seat Module C5 harness connector. Does the test light illuminate brightly? Yes Repair the (Q102) Adjustable Pedals Switch Forward circuit for a short to ground. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) . No Go To 5 .
5. (Q103) ADJUSTABLE PEDALS SWITCH REARWARD CIRCUIT SHORT TO THE (Q102) ADJUSTABLE PEDALS SWITCH FORWARD CIRCUIT Measure the resistance between the (Q103) Adjustable Pedals Switch Rearward circuit and the (Q102) Adjustable Pedals Switch Forward circuit at the Memory Seat Module C5 harness connector. Is the resistance below 5.0 ohms? Yes Repair the (Q103) Adjustable Pedals Switch Rearward circuit for a short to the (Q102) Adjustable Pedals Switch Forward circuit. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) . No Go To 6 .
6. ADJUSTABLE PEDALS SWITCH Measure the resistance between the (Q103) Adjustable Pedals Switch Rearward circuit and (Q102) Adjustable Pedals Switch Forward circuit at the terminals of the Adjustable Pedals Switch harness connector. Is the resistance below 5.0 ohms? Yes Replace the Adjustable Pedals Switch in accordance with the Service Information. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) . No Replace the Memory Seat Module in accordance with the Service Information. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) .

1. When Monitored: The Adjustable Pedals Switch is in active operation.

1. Set Condition: The Memory Seat Module detects that the Adjustable Pedals Switch has been activated in the forward position for more than 50 seconds.

Scheme 101

Scheme 102

1. DTC IS ACTIVE NOTE: This DTC must be active for the results of this test to be valid. Turn the ignition on. With the scan tool, select view DTCs. Record all DTC information. With the scan tool, clear stored DTCs. Cycle the ignition switch off then on. Move the Adjustable Pedals Switch forward and rearward several times. With the scan tool, select view DTCs. Is the status active for this DTC? Yes Go To 2 . No Refer to the «APS-INTERMITTENT CONDITION»(ref-304475-S02745785572008111000000) .
2. ADJUSTABLE PEDALS SWITCH Disconnect the Adjustable Pedals Sensor harness connector. Wait approximately 10 seconds. With the scan tool, select view DTCs. Does the status remain active for this DTC? Yes Go To 3 . No Replace the Adjustable Pedals Switch in accordance with the Service Information. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) .
3. WIRING HARNESS CONNECTOR/TERMINALS Turn the ignition off. Disconnect the Memory Seat Module harness connector. Inspect the Adjustable Pedals Sensor and Memory Seat Module wiring harness, connectors and terminals. Were any problems found? Yes Repair as necessary. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) . No Go To 4 .
4. (Q102) ADJUSTABLE PEDALS SWITCH FORWARD CIRCUIT SHORT TO GROUND Measure the resistance between ground and the (Q102) Adjustable Pedals Switch Forward circuit. Is the resistance below 5.0 ohms? Yes Repair the (Q102) Adjustable Pedals Switch Forward circuit for a short to ground. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) . No Go To 5 .
5. (Q102) ADJUSTABLE PEDALS SWITCH FORWARD CIRCUIT SHORT TO (Q101) ADJUSTABLE PEDALS SWITCH GROUND CIRCUIT Measure the resistance between the (Q102) Adjustable Pedals Switch Forward circuit and the (Q101) Adjustable Pedals Switch Ground circuit. Is the resistance below 5.0 ohms? Yes Repair the (Q102) Adjustable Pedals Switch Forward circuit for a short to the (Q101) Adjustable Pedals Switch Ground circuit. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) . No Replace the Memory Seat Module in accordance with the Service Information. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) .

1. When Monitored: The Adjustable Pedals Switch is in active operation.

1. Set Condition: The Memory Seat Module detects that the Adjustable Pedals Switch has been activated in the rearward position for more than 50 seconds.

Scheme 103

1. DTC IS ACTIVE Turn the ignition on. With the scan tool, select view DTCs. Record all DTC and DTC Environmental data. With the scan tool, clear stored DTCs. Cycle the ignition switch off then on. Move the Adjustable Pedals Switch forward and rearward several times. With the scan tool, select view DTCs. Is the status active for this DTC? Yes Go To 2 . No Refer to the «APS-INTERMITTENT CONDITION»(ref-304475-S02745785572008111000000) .
2. ADJUSTABLE PEDALS SWITCH Disconnect the Adjustable Pedals Switch harness connector. Wait approximately 10 seconds. With the scan tool, select view DTCs. Does the status remain active for this DTC? Yes Go To 3 . No Replace the Adjustable Pedals Switch in accordance with the Service Information. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) .
3. WIRING HARNESS CONNECTOR/TERMINALS Turn the ignition off. Disconnect the Memory Seat Module harness connector. Inspect the Adjustable Pedals Switch and Memory Seat Module wiring harness, connectors and terminals. Were any problems found? Yes Repair as necessary. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) . No Go To 4 .
4. (Q103) ADJUSTABLE PEDALS SWITCH REARWARD CIRCUIT SHORT TO GROUND Measure the resistance between ground and the (Q103) Adjustable Pedals Switch Rearward circuit. Is the resistance below 5.0 ohms? Yes Repair the (Q103) Adjustable Pedals Switch Rearward circuit for a short to ground. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) . No Go To 5 .
5. (Q103) ADJUSTABLE PEDALS SWITCH REARWARD CIRCUIT SHORT TO (Q101) ADJUSTABLE PEDALS SWITCH GROUND CIRCUIT Measure the resistance between the (Q103) Adjustable Pedals Switch Rearward circuit and the (Q101) Adjustable Pedals Switch Ground circuit. Is the resistance below 5.0 ohms? Yes Repair the (Q103) Adjustable Pedals Switch Rearward circuit for a short to the (Q101) Adjustable Pedals Switch Ground circuit. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) . No Replace the Memory Seat Module in accordance with the Service Information. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) .

1. When Monitored: The Adjustable Pedals Motor is in active operation.

1. Set Condition: The Memory Seat Module detects that the Adjustable Pedals Motor has been activated for a time period and has not spun with three motor direction commands.

Scheme 104

Scheme 105

Scheme 106

Scheme 107

1. DTC IS ACTIVE Turn the ignition on. With the scan tool, select view DTCs. Record all DTC and DTC Environmental data. With the scan tool, clear stored DTCs. Cycle the ignition switch off then on. Move the Adjustable Pedals Switch forward and rearward several times. With the scan tool, select view DTCs. Is the status active for this DTC? Yes Go To 2 . No Refer to the «APS-INTERMITTENT CONDITION»(ref-304475-S02745785572008111000000) .
2. WIRING HARNESS CONNECTOR/TERMINALS Turn the ignition off. Disconnect the Memory Seat Module harness connector. Disconnect the Adjustable Pedals Motor harness connector. Disconnect the Adjustable Pedals Sensor harness connector. Inspect the wiring harness, connectors and terminals. Were any problems found? Yes Repair as necessary. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) . No Go To 3 .
3. ADJUSTABLE PEDALS ASSEMBLY Turn the ignition off. Inspect the Adjustable Pedals Assembly for a condition that would cause the motor to stick or stall. Were any problems found? Yes Replace the Adjustable Pedals Assembly in accordance with the Service Information. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) . No Go To 4 .
4. (P205) ADJUSTABLE PEDALS MOTOR FORWARD CIRCUIT OPEN OR HIGH RESISTANCE Connect a jumper wire between the (P205) Adjustable Pedals Motor Forward circuit and ground at the Adjustable Pedals Motor harness connector. Using a 12-volt test light connected to 12-volts, check the (P205) Adjustable Pedals Motor Forward circuit at the Memory Seat Module harness connector. NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery. Is the test light illuminated and bright? Yes Go To 5 . No Repair the (P205) Adjustable Pedals Motor Forward circuit for an open circuit or high resistance. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) .
5. (P206) ADJUSTABLE PEDALS MOTOR REARWARD CIRCUIT OPEN CIRCUIT OR HIGH RESISTANCE Connect the jumper wire between the (P206) Adjustable Pedals Motor Rearward circuit and ground at the Adjustable Pedals Motor harness connector. Using a 12-volt test light connected to 12-volts, check the (P206) Adjustable Pedals Motor Rearward circuit at the Memory Seat Module harness connector. NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery. Is the test light illuminated and bright? Yes Go To 6 . No Repair the (P206) Adjustable Pedals Motor Rearward circuit for an open. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) .
6. (G914) SENSOR RETURN CIRCUIT OPEN OR HIGH RESISTANCE Connect the jumper wire between the (G914) Sensor Return circuit and ground at the Adjustable Pedals Motor harness connector. Using a 12-volt test light connected to 12-volts, check the (G914) Sensor Return circuit at the Memory Seat Module harness connector. NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery. NOTE: Remove the jumper wire before proceeding to the next test. Is the test light illuminated and bright? Yes Go To 7 . No Repair the (G914) Sensor Return circuit for an open. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) .
7. ADJUSTABLE PEDALS MOTOR Turn the ignition off. Disconnect the Adjustable Pedals Motor harness connector. Measure the resistance between the (P205) Adjustable Pedals Motor Forward circuit and the (P206) Adjustable Pedals Motor Rearward circuit at the terminals of the Adjustable Pedals Motor. Is the resistance below 100.0 ohms? Yes Replace and reprogram the Memory Seat Module in accordance with the Service Information. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) . No Replace the Adjustable Pedals Motor in accordance with the Service Information. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) .

Scheme 108

1. When Monitored: With the ignition on.

1. Set Condition: When the Totally Integrated Power Module detects low voltage on the Adjustable Pedals Control circuit.

Scheme 109

1. DTC IS ACTIVE Turn the ignition on. With the scan tool, select view DTCs. Record DTC and DTC Environmental data. With the scan tool, clear stored DTCs. Cycle the ignition switch off then on. WARNING: Apply the parking brake. The vehicle may roll when the Transmission is shifted out of Park. Shift into Reverse for at least 5 seconds, then move the shifter back into Park. With the scan tool, select view DTCs. Does the scan tool display this DTC as active? Yes Go To 2 . No Refer to the «APS-INTERMITTENT CONDITION»(ref-304475-S02745785572008111000000) .
2. CHECK ADJUSTABLE PEDALS SWITCH STATUS Turn the ignition off. Disconnect the Adjustable Pedals Switch harness connector. Visually inspect the connector terminals for damage or corrosion. Turn the ignition on. With the scan tool, select view DTCs. Record DTC and DTC Environmental data. With the scan tool, clear stored DTCs. Cycle the ignition switch off then on. WARNING: Apply the parking brake. The vehicle may roll when the Transmission is shifted out of Park. Shift into Reverse for at least 5 seconds, then move the shifter back into Park. With the scan tool, select view DTCs. Does the scan tool display this DTC as active? Yes Go To 3 . No Replace the Adjustable Pedals Switch in accordance with the Service Information. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) .
3. (A72) ADJUSTABLE PEDALS CONTROL CIRCUIT SHORTED TO GROUND (TIPM) Turn the ignition off. Disconnect the TIPM C2 harness connector. Measure the resistance between ground and the (A72) Adjustable Pedals Control circuit at the Adjustable Pedals Switch harness connector. Is the resistance below 5.0 ohms? Yes Repair the (A72) Adjustable Pedals Control circuit for a short to ground. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) . No Replace the Totally Integrated Power Module in accordance with the Service Information. Perform «APS VERIFICATION TEST»(ref-304475-S34951796962008111000000) .