IDENTIFICATION
| Model (Chassis Code) | Engine Size (Code) | |
|---|---|---|
| 1987-1990 | ||
| 325is (E30) | 2.5L (M20) | |
| 1987-1992 | ||
| 325i (E30) | 2.5L (M20) | |
| 1988-1991 | ||
| 325ix (E30) | 2.5L (M20) | |
| M3 (E30) | 2.3L (S14) | |
ENGINE & CHASSIS IDENTIFICATION (3-SERIES)
| Model (Chassis Code) | Engine Size (Code) | |
|---|---|---|
| 1989-1993 | ||
| 535i (E34) | 3.4L (M30) | |
| 1991-1993 | ||
| M5 (E34) | 3.6L (S38) | |
| 1991-1995 | ||
| 525i (E34) | 2.5L (M50) | |
| 1993-1995 | ||
| 525it (E34) | 2.5L (M50) | |
| 1994-1995 | ||
| 530i & it (E34) | 3.0L (M60) | |
| 1994-1995 | ||
| 540i (E34) | 4.0L (M60) | |
ENGINE & CHASSIS IDENTIFICATION (5-SERIES)
| Model (Chassis Code) | Engine Size (Code) | |
|---|---|---|
| 1988-1992 | ||
| 735i & iL (E32) | 3.5L (M30) | |
ENGINE & CHASSIS IDENTIFICATION (7-SERIES)
DESCRIPTION
Note. For additional information, see appropriate DISC article.
Anti-Lock Brake System (ABS) consists of a hydraulic unit with 4 solenoid switching valves, 4 speed sensors, an electronic control unit, relays and wiring harness. (Scheme 1)
An ANTI-LOCK indicator light, located on the instrument panel, lights up when the ignition switch is in ON position. This indicator light goes out when engine is started, indicating ABS system is ready for operation.
The ABS system activates above 8 MPH. When vehicle speed is above 3 MPH, the built-in electronic test monitor will start checking the ABS. If a fault is found, the warning light will come on. When the ABS light is on, the ABS system is switched off. The vehicle will then convert to conventional braking.
If battery voltage is less than 10.5 volts, when the ignition is on and test speed is exceeded, the ABS will remain off until the alternator increases voltage output to more than 10.5 volts. The ABS warning light will then go out.
