Home/Mazda/626/Mazda 626 GF (1997-2002)/Repair manual/Anti-Lock/traction Control/ABS Control Module/hydraulic Unit

Contents

Wiring diagrams Section: Anti-Lock/traction Control

Description & Operation

Component Locations

Bleeding Brake System

Trouble Shooting

ABS Warning Light Does Not Illuminate

Diagnostic Aids

ABS Warning Light Illuminates After Ignition Is on for More Than 4 Seconds

ABS Light Goes on & off Intermittently When Ignition Is On

ABS Light Illuminates Normally, System Operation Abnormal (Spongy Brakes, Brake Pull or Poor Braking)

ABS Light & Both Tcs Lights Illuminate When Ignition Is On

Tcs Indicator Light & Tcs off Light Illuminate When Ignition Is On

ABS Warning Light & Tcs off Light Illuminate When Ignition Is On

Only Tcs off Light Illuminates When Ignition Is Turned On

Tcs Indicator Light Flashes When Tcs Is Not Activated During Driving

Only Tcs Indicator Light Illuminates When Ignition Is On

Tcs Indicator Light &/Or Tcs off Light Does Not Illuminate

Tcs Operation Is Not Working Sufficiently

ABS Warning Light, Tcs Indicator Light & Tcs off Light Do Not Illuminate When Ignition Is On

Component Tests

ABS Control Module

ABS Hydraulic Unit On-Vehicle Inspection

On-Vehicle Inspection

Tcs Operation

Tcs off Switch

Voltage Test

Resistance Test

Output Voltage Pattern Test

Diagnosis & Testing

Pre-Diagnosis Inspection

Using New Generation Star (Ngs) Scan Tool

Clearing Codes

Using New Generation Star (Ngs) Tool

Additional System Functions

Active Command Modes Procedure

Pid/data Monitor Procedure

Diagnostic Tests

Test A: ABS Control Module Power Supply

Test B: ABS Control Module Defective

Test C: Brake Pedal Input (Open Circuit in Harness)

Test D: ABS Motor or Pump Motor Relay Circuit Failure

Test E: Engine Speed (RPM) Input Signal Circuit Failure

Diagnostics Aids

Test F: Torque Reduction (Request) Signal Circuit Failure

Test G: Torque Reduction (Engine Condition) Signal Circuit Failure

Test H: Wheel Speed Sensor Circuit Failure

Test I: Wheel Speed Sensor/rotor Coherency Fault

Test J: Dump Valve &/Or Isolation Valve Failure

Test K: ABS Wheel Speed Sensor (Speed Mismatch)

Test L: ABS Solenoid Valve Power Supply Circuit Failure

Test M: Engine Control System (Invalid/faulted Data Received)

ABS Control Module/hydraulic Unit

Master Cylinder Push Rod

Brake Pedal Height & Stoplight Switch

Brake Pedal Free Play

Parking/emergency Brake

Torque Specifications

All sections

ABS Control Module/hydraulic Unit Mazda 626 GF

Anti-Lock/traction Control

Note. On vehicles equipped with Traction Control System (TCS), TCS control module is integrated with ABS CM (ABS).