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LOCATION:    6.2 Anti-Lock Brake System (ABS)   >   11 Diagnosis - Diagnostic Trouble Code (DTC) Memory


Diagnosis - Diagnostic Trouble Code (DTC) Memory

Test Preparation for DTC Readout
1. Connect impulse counter scan tool or Hand-Held Tester to data link connector (X11/4) as shown in section 0.

Note:
Connect yellow wire from impulse counter scan tool as follows:
ABS control module (N30) socket 6
Base module (N16/1) socket 8

2. Ignition: ON.

3. Read DTC memory of ABS control module (N30), and base module (N16/1).

Equipment

Hand-Held Tester (HHT) see applicable Service Information in groups 58
and 99

Diagnostic trouble code (DTC) Possible cause Test step/Remedy 1)
   
No faults recognized. In case of complaint: 23 (entire test)
Left front axle vehicle speed sensor (L6/1), open circuit 23 10.0
Right front axle vehicle speed sensor (L6/2), open circuit 23 12.0
Rear axle vehicle speed sensor (L6), open circuit 23 14.0
Left front axle solenoid valve (A7y1) 23 16.0
Right front axle solenoid valve (A7y2) 23 17.0
Rear axle solenoid valve (A7y3) 23 18.0
Return pump (A7m1) or return pump relay (A7k2) 23 6.0
Solenoid valve relay (A7k1) 23 5.0
Models 140.04/05: Master cylinder switchover valve (Y61) 23 7.0
Brake lamp switch (S9/1) 23 9.0
Models 140.04/05: Lateral acceleration sensor (B24/2) 23 8.0
ABS control module (N30) N30
Vehicle speed sensors (L6, L6/1, L6/2), implausible signal 2) 23 10.0
23 12.0
23 14.0
Visual inspection
Solenoid valve relay (A7k1) 23 5.0
Left front axle vehicle speed sensor (L6/1), implausible signal 2) 23 10.0
Right front axle vehicle speed sensor (L6/2), implausible signal 2) 23 12.0
Rear axle vehicle speed sensor (L6), implausible signal 2) 23 14.0
Models 140.04/05: Lateral acceleration sensor (B24/2), implausible signal 23 8.0
1) Observe Preparation for Test, see 22.
2) Incorrect number of rotor teeth, dirty or damaged, incorrect rear axle ratio, tires or wheels.