General
From MY 2003 onwards, the Agila is equipped with a new 4-channel ABS system from Continental Teves. The hydraulic generator (1) is located on the right-hand side of the vehicle adjacent to the suspension turret. The following illustration shows the installation sequence of the components in the vehicle.
- 1. ABS hydraulic generator with control device
- 2. Instrument
- 3. Wheel revolutions sensor
- 4. Pulse generator
• Service: The ABS hydraulic generator is supplied by the Service division only in pre-filled form.
Function Mode (Electrohydraulic Diagram)
The following illustration shows how the ABS system of the Agila works.
| 1 | Assembly of ABS control device / hydraulic generator | 9 | Instrument |
|---|---|---|---|
| 2 | ABS control device | 10 | ECM, control device for power steering |
| 3 | Hydraulic generator | 11 | Diagnostics connection |
| 4 | Safety relay | 13 | Wheel revolutions sensor, front right |
| 5 | Pump relay | 14 | Wheel revolutions sensor, front left |
| 6 | Brake light switch | 15 | Wheel revolutions sensor, rear right |
| 7 | ABS warning light | 16 | Wheel revolutions sensor, rear left |
| 8 | Brake warning light |
ABS Switching Plan
| No. | Type | No. | Type |
|---|---|---|---|
| 1 | Battery | 14 | Valves |
| 2 | Main fuses | 15 | Diagnostics connection |
| 3 | Ignition lock | 16 | Wheel revolutions sensor, rear right |
| 4 | Fuses | 17 | Wheel revolutions sensor, rear left |
| 5 | Instrument | 18 | Wheel revolutions sensor, front right |
| 6 | ABS warning light | 19 | Wheel revolutions sensor, front left |
| 7 | Brake warning light | 20 | ECM |
| 8 | Driver information warning light module (for ABS) | 21 | Diagnostics connection |
| 9 | Assembly of ABS control device / hydraulic generator | 22 | ECM, SDM and control device for power steering |
| 11 | Safety relay | 23 | Brake light |
| 12 | ABS pump relay | 24 | Brake light switch |
| 13 | ABS - pump motor | 25 | ECM, TCM, SDM and control device for power steering |
ABS -Control Device / Hydraulic Generator
Cable connector (2) on ABS control device is unlocked (I) or locked (II) by moving the clip (1).
• Service: The ABS control device has been incorporated in the hydraulic generator and cannot be replaced individually.
ABS Control Device Input and Output Signals
| I | Input signal | |
|---|---|---|
| 1 | Brake light switch | |
| 2 | Ignition lock | |
| 3 | Wheel revolutions sensor on each wheel | |
| II | ABS -control device / hydraulic generator | |
| 4 | ABS control device | |
| 5 | Pump relay | |
| 6 | Safety relay | |
| 7 | Pump motor | |
| 8 | Hydraulic generator | |
| 9 | Inlet valve, front left | |
| 10 | Outlet valve, front left | |
| 11 | Inlet valve, rear left | |
| 12 | Outlet valve, rear left | |
| 13 | Inlet valve, front right | |
| 14 | Outlet valve, front right | |
| 15 | Inlet valve, rear right | |
| 16 | Outlet valve, rear right | |
| III | Output signal | |
| 17 | TCM, ECM, SDM, control device for power steering 1) | |
| 18 | Instrument | |
| 19 | ABS warning light | |
| 20 | Brake warning light | |
| 21 | Diagnostic link | |
ABS Control Device Wiring Configuration
The cable connector (26 pin) on the ABS control device is wired as follows:
| No. | Connected to | No. | Connected to |
|---|---|---|---|
| 1 | ABS safety valve | 14 | ABS - pump motor |
| 2 | Wheel revolutions sensor, rear left (+) | 15 | not wired |
| 3 | Wheel revolutions sensor, rear left (-) | 16 | Brake light switch |
| 4 | ABS warning light | 17 | not wired |
| 5 | Wheel revolutions sensor, front right (-) | 18 | Vehicle speed signal |
| 6 | Wheel revolutions sensor, front right (+) | 19 | not wired |
| 7 | Diagnostics connection | 20 | Ignition lock |
| 8 | Wheel revolutions sensor, front left (+) | 21 | not wired |
| 9 | Wheel revolutions sensor, front left (-) | 22 | not wired |
| 10 | Brake warning light | 23 | not wired |
| 11 | Wheel revolutions sensor, rear right (+) | 24 | not wired |
| 12 | Wheel revolutions sensor, rear right (-) | 25 | Diagnostics connection |
| 13 | not wired | 26 | Mass |
Diagnosis
The following parameters can be read using TECH 2, for diagnostic purposes:
| Component | Standard value 2) |
|---|---|
| Wheel revolutions sensor, front right | 0 km/h |
| Wheel revolutions sensor, front left | 0 km/h |
| Wheel revolutions sensor, rear right | 0 km/h |
| Wheel revolutions sensor, rear left | 0 km/h |
| Brake pedal switch | OFF 3) ON 4) |
| Pump relay | 0 V |
| Battery | 10 - 17 V |
1
) if fitted
2
) Test only if: engine off, ignition on, all other electrical consumers off
3
) Brake pedal not depressed
4
) Brake pedal depressed