CM
ESP/ESC (Bosch 8)
2
Variation
Line-up (BOSCH 8 ABS/ESP)
S: Standard, O: Option
General M/East Europe Aust. USA/Canada
ABS
ESP/ESC
O
(GL,GLS,
LWB, SWB)
O
(GLS, LWB,
SWB)
O
(GL,GLS,
LWB)
O
(GLS, LWB, SWB)
S
(GL,GLS,LWB,SWB)
Area
3
COMPONENTS OF ESP SYSTEM
4
VARIANT CODING
Perform the variant coding if there is a ESP OFF W/L on with a ‘C1702
(Variant Coding Error)’ after replacing a ECM,TCM or ESPCM.
5
Construction

PWM control PWM control
ON/OFF control ON/OFF control
8
HECU
Pressure sensor
Operating condition
HYDRAULIC BRAKE ASSIST

- over 30 bar
- over 2,200 bar/sec
- over 20 km/h 9
INPUTS AND OUTPUTS
Pressure Sensor
(HCU Built-in type)
10
ACTIVE WHEEL SPEED SENSOR
MAX TYPICAL MIN
LOWER SIGNAL I
LOW
(mA) 5.9 7 8.4
UPPER SIGNAL I
HIGH
(mA) 11.8 14 16.8
SIGNAL RATIO I
HIGH
/ I
LOW