ANTI-LOCK BRAKE SYSTEM
P-50spec tableRELATIONSHIP CHART
Relationship Chart (Input vs Output)
ABS wheel-speed sensor
ABS hydraulic unit: Solenoid valveO
ABS hydraulic unit: ABS motorO
ABS warning lightO
Data link connectorO
Brake switch
ABS hydraulic unit: Solenoid valveO
ABS hydraulic unit: ABS motorO
ABS warning light
Data link connector
Fail-safe relay
ABS hydraulic unit: Solenoid valveO
ABS hydraulic unit: ABS motor
ABS warning lightO
Data link connectorO
Motor relay
ABS hydraulic unit: Solenoid valve
ABS hydraulic unit: ABS motorO
ABS warning lightO
Data link connectorO
DIAGNOSTIC CHART
Diagnostic Chart (Symptom vs Cause)
1
SymptomABS warning light not illuminated when ignition switch turned ON.
Input: ABS wheel-speed sensor
Input: Brake switch
Input: ABS relay - Fail-safe relay
Input: ABS relay - Motor relay
Output: Hydraulic unit - Solenoid valve
Output: Hydraulic unit - ABS motor
Output: ABS warning lightO
Output: Data link connector
Output: ABS control module
2
SymptomABS warning light remains ON.
Input: ABS wheel-speed sensorO
Input: Brake switchO
Input: ABS relay - Fail-safe relayO
Input: ABS relay - Motor relayO
Output: Hydraulic unit - Solenoid valveO
Output: Hydraulic unit - ABS motorO
Output: ABS warning lightO
Output: Data link connector
Output: ABS control moduleO
3
SymptomABS warning light flashes.
Input: ABS wheel-speed sensor
Input: Brake switch
Input: ABS relay - Fail-safe relay
Input: ABS relay - Motor relay
Output: Hydraulic unit - Solenoid valve
Output: Hydraulic unit - ABS motor
Output: ABS warning light
Output: Data link connectorO
Output: ABS control module