ABS Schematic Icons
ABS Schematic Icons Icon Icon Definition IMPORTANT: Twisted-pair wires provide an effective shield that helps protect sensitive electronic components from electrical interference. If the wires were covered with shielding, install new shielding. In order to prevent electrical interference from degrading the performance of the connected components, you must maintain the proper specification when making any repairs to the twisted-pair wires shown : The wires must be twisted a minimum of 9 turns per 31 cm (12 in) as measured anywhere along the length of the wires. The outside diameter of the twisted wires must not exceed 6.0 mm (0.25 in)
Scheme 1
Scheme 2
Scheme 3
Scheme 4
Scheme 5
Scheme 6
| Callout | Component Name |
|---|---|
| 1 | Wheel Speed Sensor (WSS) - RF |
| 2 | Suspension Damper - RF |
| 3 | Suspension Position Sensor - RF |
| 4 | Suspension Position Sensor - LF |
| 5 | Suspension Damper - LF |
| 6 | Wheel Speed Sensor (WSS) - LF |
| 7 | Brake Fluid Pressure Sensor |
| 8 | Electronic Brake Control Module (EBCM) |
Scheme 7
| Callout | Component Name |
|---|---|
| 1 | Auxiliary Power Outlet - Console |
| 2 | Auxiliary Audio/Video Control |
| 3 | HVAC Control Module - Rear Auxiliary (KA6) |
| 4 | LR Heated Seat Switch - part of the Rear Auxiliary Module |
| 5 | RR Heated Seat Switch - part of the Rear Auxiliary Module |
| 6 | Mode Select Switch - Auxiliary (KA6) |
| 7 | Auxiliary Power Outlet - Rear |
| 8 | Hazard Switch |
| 9 | Traction Control Switch |
Scheme 8
| Callout | Component Name |
|---|---|
| 1 | Yaw Rate and Lateral Acceleration Sensor (JL9) |
| 2 | Passenger Side A-Pillar |
Scheme 9
| Callout | Component Name |
|---|---|
| 1 | Automatic Level Control (ALC) Compressor |
| 2 | Automatic Level Control (ALC) Exhaust Solenoid |
| 3 | Suspension Damper - LR |
| 4 | Wheel Speed Sensor (WSS) - LR |
| 5 | Suspension Position Sensor - LR |
| 6 | Suspension Position Sensor - RR |
| 7 | Wheel Speed Sensor (WSS) - RR |
| 8 | Suspension Damper - RR |
Scheme 10
| Callout | Component Name |
|---|---|
| 1 | Telescoping Drive Wheel |
| 2 | Steering Angle Sensor |
| 3 | Turn Signal/Multifunction Switch |
| 4 | Windshield Wiper/Washer Switch Assembly |
| 5 | Steering Wheel Controls Seek Button |
| 6 | Steering Wheel Controls Volume Button |
| 7 | C277 |
| 8 | Horn Switch Connector |
| 9 | Steering Wheel Controls Mute/Source Button -or- Heated Steering Wheel Button (KA1) |
| 10 | Steering Wheel Controls Voice/Preset Button |
| 11 | Heated Steering Wheel |
| 12 | Tilt/Telescope Switch |
| 13 | Tilt Actuator |
| 14 | C202 |
| 15 | Steering Column Lock Control Module (UA2) |
Test Description
The numbers below refer to the step numbers on the diagnostic table.
- 3: Use the scan tool to check the normal state of the ABS indicator control circuit.
- 4: Ensures that the instrument panel cluster (IPC) can operate the ABS indicator.
| Step | Action | Values | Yes | No |
|---|---|---|---|---|
| Schematic Reference: ABS Schematics Connector End View Reference: ABS Connector End Views or Instrument Panel, Gages, and Console Connector End Views in Instrument Panel, Gages, and Console | ||||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information | |
| 2 | Inspect the electronic brake control module (EBCM) ground, making sure the ground is clean and torqued to the proper specification. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 9 | Go to Step 3 | |
| 3 | Install a scan tool. Turn ON the ignition, with the engine OFF. With a scan tool, observe the Antilock Brake System (ABS) Warning Indicator parameter in the dynamic rear proportion (DRP)/ABS/Traction Control System (TCS) data list. Does the scan tool display Off? | Go to Step 4 | Go to Step 5 | |
| 4 | Turn OFF the ignition. Turn ON the ignition, with the engine OFF. Observe the ABS indicator on the instrument panel cluster (IPC) during the displays test. Does the ABS indicator illuminate during the displays test and then turn OFF? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 6 | |
| 5 | Inspect for poor connections at the harness connector of the EBCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 9 | Go to Step 7 | |
| 6 | Inspect for poor connections at the harness connector of the IPC. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 9 | Go to Step 8 | |
| 7 | Replace the EBCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | Go to Step 9 | ||
| 8 | Replace the IPC. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | Go to Step 9 | ||
| 9 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 | |
ABS Indicator Always On
The numbers below refer to the step numbers on the diagnostic table.
- 3: Use the scan tool to check the normal state of the ABS indicator control circuit.
- 4: Ensures that the instrument panel cluster (IPC) can operate the ABS indicator.
| Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
| Schematic Reference: ABS Schematics Connector End View Reference: ABS Connector End Views or Instrument Panel, Gages, and Console Connector End Views in Instrument Panel, Gages, and Console | ||||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information | |
| 2 | Inspect the electronic brake control module (EBCM) ground, making sure the ground is clean and torqued to the proper specification. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 9 | Go to Step 3 | |
| 3 | Install a scan tool. Turn ON the ignition, with the engine OFF. With a scan tool, observe the ABS Warning Indicator parameter in the DRP/ABS/TCS data list. Does the scan tool display Off? | Go to Step 4 | Go to Step 5 | |
| 4 | Turn OFF the ignition. Turn ON the ignition, with the engine OFF. Observe the ABS indicator on the instrument panel cluster (IPC) during the displays test. Does the ABS indicator illuminate during the displays test and then turn OFF? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 6 | |
| 5 | Inspect for poor connections at the harness connector of the EBCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 9 | Go to Step 7 | |
| 6 | Inspect for poor connections at the harness connector of the IPC. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 9 | Go to Step 8 | |
| 7 | Replace the EBCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | Go to Step 9 | ||
| 8 | Replace the IPC. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | Go to Step 9 | ||
| 9 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 | |
ABS Indicator Inoperative
The numbers below refer to the step numbers on the diagnostic table.
- 2: Use the scan tool to check the normal state of the Traction Control indicator control.
- 3: Ensures that the instrument cluster can operate the Traction Control indicator.
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: ABS Schematics Connector End View Reference: ABS Connector End Views or Instrument Panel, Gages, and Console Connector End Views in Instrument Panel, Gages, and Console | |||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
| 2 | Install a scan tool. Turn ON the ignition, with the engine OFF. With a scan tool, observe the TCS Warning Indicator/Message parameter in the DRP/ABS/TCS data list. Does the scan tool display Off? | Go to Step 3 | Go to Step 4 |
| 3 | Turn OFF the ignition. Turn ON the ignition, with the engine OFF. Observe the Traction Control indicator on the instrument cluster (IPC) during the bulb check. Does the Traction Control indicator illuminate during the bulb check and then turn OFF? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 5 |
| 4 | Inspect for poor connections at the harness connector of the electronic brake control module (EBCM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 8 | Go to Step 6 |
| 5 | Inspect for poor connections at the harness connector of the IPC. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 8 | Go to Step 7 |
| 6 | Replace the EBCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | Go to Step 8 | |
| 7 | Replace the IPC. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | Go to Step 8 | |
| 8 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
Traction Control Indicator Always On
The numbers below refer to the step numbers on the diagnostic table.
- 2: Use the scan tool to check the normal state of the Traction Control indicator control.
- 3: Ensures that the instrument cluster can operate the Traction Control indicator.
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: ABS Schematics Connector End View Reference: ABS Connector End Views or Instrument Panel, Gages, and Console Connector End Views in Instrument Panel, Gages, and Console | |||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
| 2 | Install a scan tool. Turn ON the ignition, with the engine OFF. With a scan tool, observe the TCS Warning Indicator/Message parameter in the DRP/ABS/TCS data list. Does the scan tool display Off? | Go to Step 3 | Go to Step 4 |
| 3 | Turn OFF the ignition. Turn ON the ignition, with the engine OFF. Observe the Traction Control indicator on the instrument cluster (IPC) during the bulb check. Does the Traction Control indicator illuminate during the bulb check and then turn OFF? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 5 |
| 4 | Inspect for poor connections at the harness connector of the electronic brake control module (EBCM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 8 | Go to Step 6 |
| 5 | Inspect for poor connections at the harness connector of the IPC. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 8 | Go to Step 7 |
| 6 | Replace the EBCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | Go to Step 8 | |
| 7 | Replace the IPC. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | Go to Step 8 | |
| 8 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
Traction Control Indicator Inoperative
The numbers below refer to the step numbers on the diagnostic table.
- 2: Use the scan tool to check the normal state of the Traction Off indicator control.
- 3: Ensures that the instrument cluster can operate the Traction Off indicator.
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: ABS Schematics Connector End View Reference: ABS Connector End Views or Instrument Panel, Gages, and Console Connector End Views in Instrument Panel, Gages, and Console | |||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
| 2 | Install a scan tool. Turn ON the ignition, with the engine OFF. With a scan tool, observe the TCS Warning Indicator/Message parameter in the DRP/ABS/TCS data list. Does the scan tool display OFF? | Go to Step 3 | Go to Step 4 |
| 3 | Turn OFF the ignition. Turn ON the ignition, with the engine OFF. Observe the Traction Off indicator on the instrument panel cluster (IPC) during the bulb check. Does the Traction Off indicator illuminate during the bulb check and then turn OFF? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 5 |
| 4 | Inspect for poor connections at the harness connector of the electronic brake control module (EBCM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 8 | Go to Step 6 |
| 5 | Inspect for poor connections at the harness connector of the IPC. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 8 | Go to Step 7 |
| 6 | Replace the EBCM. Refer to Diagnostic System Check - Vehicle in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | Go to Step 8 | |
| 7 | Replace the IPC. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | Go to Step 8 | |
| 8 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
Traction Off Indicator Always On
The numbers below refer to the step numbers on the diagnostic table.
- 2: Use the scan tool to check the normal state of the Traction Off control.
- 3: This step ensures that the instrument cluster can operate the Traction Off indicator.
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: ABS Schematics Connector End View Reference: ABS Connector End Views , Instrument Panel, Gages, and Console Connector End Views in Instrument Panel, Gages, and Console, or Computer/Integrating Systems Connector End Views in Computer/Integrating Systems | |||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
| 2 | Install a scan tool. Turn ON the ignition, with the engine OFF. With a scan tool, observe the TCS Warning Indicator/Message parameter in the DRP/ABS/TCS data list. Does the scan tool display Off? | Go to Step 3 | Go to Step 10 |
| 3 | Turn OFF the ignition. Turn ON the ignition, with the engine OFF. Observe the Traction Off indicator on the instrument panel cluster (IPC) during the bulb check. Does the Traction Off indicator illuminate during the bulb check and then turn OFF? | Go to Step 4 | Go to Step 11 |
| 4 | Turn OFF the ignition. Install a scan tool. Turn ON the ignition, with the engine OFF. With a scan tool, observe the TCS On/Off Switch parameter in the Rear Integration Module data list. Activate the traction control switch. Does the TCS On/Off Switch parameter change state? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 5 |
| 5 | Turn OFF the ignition. Disconnect the traction control switch connector. Connect a 3-amp fused jumper from the signal circuit of the traction control switch to the ground circuit of the traction control switch. Turn ON the ignition, with the engine OFF. With a scan tool, observe the TCS Switch State parameter. Does the scan tool display On? | Go to Step 9 | Go to Step 6 |
| 6 | Test the signal circuit of the traction control switch for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 16 | Go to Step 7 |
| 7 | Test the ground circuit of the traction control switch for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 16 | Go to Step 8 |
| 8 | Inspect for poor connections at the harness connector of the rear integration module (RIM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 16 | Go to Step 12 |
| 9 | Inspect for poor connections at the harness connector of the traction control switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 16 | Go to Step 13 |
| 10 | Inspect for poor connections at the harness connector of the electronic brake control module (EBCM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 16 | Go to Step 14 |
| 11 | Inspect for poor connections at the harness connector of the IPC. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 16 | Go to Step 15 |
| 12 | Replace the RIM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | Go to Step 16 | |
| 13 | Replace the traction control switch. Refer to Traction Control Switch Replacement . Did you complete the replacement? | Go to Step 16 | |
| 14 | Replace the EBCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | Go to Step 16 | |
| 15 | Replace the IPC. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | Go to Step 16 | |
| 16 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
Traction Off Indicator Inoperative
The numbers below refer to the step numbers on the diagnostic table.
- 3: Perform the Steering Position Sensor Test in order to verify if the steering wheel position sensor (SWPS) is operating properly.
- 4: Verify that the Lateral Accelerometer Input parameter is within the valid range.
- 5: Verify that the Yaw Rate Input parameter is within the valid range.
| Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
| Schematic Reference: ABS Schematics | ||||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information | |
| 2 | Install a scan tool. Start the engine. Observe the VSES is centered parameter in the VSES data list. Perform the Diagnostic Test Drive. Refer to Diagnostic Test Drive . Did the scan tool display Yes within the specified value? | 30 seconds | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
| 3 | With the scan tool, perform the Steering Position Sensor Test. Did the steering wheel position sensor (SWPS) pass the test? | Go to Step 4 | Go to Step 7 | |
| 4 | With a scan tool, observe the Lateral Accelerometer Input parameter in the VSES data list. Does the scan tool display within the specified range? | 2.3-2.7 V | Go to Step 5 | Go to Step 8 |
| 5 | With a scan tool, observe the Yaw Rate Sensor Input parameter in the VSES data list. Does the scan tool display within the specified range? | 2.3-2.7 V | Go to Step 6 | Go to Step 8 |
| 6 | Replace the electronic brake control module (EBCM). Refer to Control Module References in Computer/integrating Systems for replacement, setup and programming. Did you complete the replacement? | Go to Step 9 | ||
| 7 | Replace the SWPS. Did you complete the replacement? | Go to Step 9 | ||
| 8 | Replace the yaw rate sensor/lateral accelerometer. Refer to Yaw Rate Sensor/Lateral Accelerometer Replacement . Did you complete the replacement? | Go to Step 9 | ||
| 9 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 | |
Vehicle Stability Enhancement System Inoperative
The number below refers to the step number on the diagnostic table.
- 6: Perform the Steering Position Sensor Test in order to verify if the steering wheel position sensor (SWPS) is operating properly.
| Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
| Schematic Reference: ABS Schematics | ||||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information | |
| 2 | Inspect the mounting of the yaw rate sensor/lateral accelerometer. Refer to Yaw Rate Sensor/Lateral Accelerometer Replacement . Did you find and correct the condition? | Go to Step 15 | Go to Step 3 | |
| 3 | Install a scan tool. Start the engine. With a scan tool, observe the Yaw Rate Sensor Input parameter in the VSES data list. Perform the Diagnostic Test Drive. Refer to Diagnostic Test Drive . Does the scan tool display suddenly increase or decrease without rapid turning of the vehicle? | Go to Step 4 | Go to Step 5 | |
| 4 | Perform the diagnosis for DTC C0196. Refer to DTC C0196 . Did you find and correct the condition? | Go to Step 15 | Go to Step 12 | |
| 5 | Straighten the front wheels. Observe the Dual Analog SWPS Input A and Dual Analog SWPS Input B in the DRP/ABS/TCS data list. Slowly rotate the steering wheel in both directions. Does the scan tool display change states as the steering wheel was rotated? | Go to Step 6 | Go to Step 14 | |
| 6 | With the scan tool, perform the Steering Position Sensor Test. Did the steering wheel position sensor (SWPS) pass the test? | Go to Step 7 | Go to Step 14 | |
| 7 | Place the vehicle on a level surface. With a scan tool, observe the Lateral Accelerometer Input parameter in the VSES data list. Does the scan tool display within the specified range? | 2.3-2.7 V | Go to Step 9 | Go to Step 8 |
| 8 | Replace the yaw rate sensor/lateral accelerometer. Refer to Yaw Rate Sensor/Lateral Accelerometer Replacement . Did you find and correct the condition? | Go to Step 15 | Go to Step 9 | |
| 9 | Inspect the electronic brake control module (EBCM) for the proper part number. Did you find the correct part number? | Go to Step 10 | Go to Step 12 | |
| 10 | Inspect the power steering gear for the proper part number. Did you find the correct part number? | Go to Step 11 | Go to Step 13 | |
| 11 | Inspect the alignment of the vehicle. Refer to Measuring Wheel Alignment in Wheel Alignment. Did you find and correct the condition? | Go to Step 15 | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | |
| 12 | Replace the EBCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup and programming. Did you complete the replacement? | Go to Step 15 | ||
| 13 | Replace the power steering gear. Refer to Power Steering Gear Replacement in Power Steering System. Did you complete the replacement? | Go to Step 15 | ||
| 14 | Replace the SWPS. Did you complete the repair? | Go to Step 15 | ||
| 15 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 | |
Vehicle Stability Enhancement System Unwanted Activation