Retrieving Diagnostic Trouble Codes By Shorting SCS Circuit

1. Connect scan tool to 16-pin Data Link Connector (DLC) located behind access panel in center console. See Fig 1. Use scan tool to short Service Check Signal (SCS) circuit to ground. Without depressing brake pedal, turn ignition on, engine off. ABS or TCS indicator light comes on for 2-second bulb check. Record blinking indicator light sequence. See Fig 2.
   NOTE: System will not indicate DTCs unless these conditions are met: TCS switch is not pushed, brake pedal is released, ignition is on, engine off, and SCS circuit is shorted to ground before ignition is turned on.
2. After ignition is turned on, ABS or TCS indicator light will turn on for 2 seconds, then pause for 4 seconds before blinking first DTC. First code number indicates main code and second code number indicates sub code. To recheck sequence, cycle ignition off and then on again. After DTCs have been retrieved, conduct appropriate test procedures. See ABS DIAGNOSTIC TROUBLE CODE IDENTIFICATION  and TCS DIAGNOSTIC TROUBLE CODE IDENTIFICATION  tables. If light does not flash DTC(s), go to ABS INDICATOR CIRCUIT  or TCS INDICATOR CIRCUIT  under SYMPTOM TESTS.

Fig 1: Connecting Scan Tool To Data Link Connector

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 2: Identifying Diagnostic Trouble Codes

Courtesy of AMERICAN HONDA MOTOR CO., INC.

ABS DIAGNOSTIC TROUBLE CODE IDENTIFICATION

Code	Description
11	Right Front Wheel Sensor Circuit Open Or Shorted
12	Right Front Wheel Sensor Intermittent Interruption
13	Left Front Wheel Sensor Circuit Open Or Shorted
14	Left Front Wheel Sensor Intermittent Interruption
15	Right Rear Wheel Sensor Circuit Open Or Shorted
16	Right Rear Wheel Sensor Intermittent Interruption
17	Left Rear Wheel Sensor Circuit Open Or Shorted
18	Left Rear Wheel Sensor Intermittent Interruption
21	Right Front Wheel Pulser (Trigger Wheel)
22	Left Front Wheel Pulser (Trigger Wheel)
23	Right Rear Wheel Pulser (Trigger Wheel)
24	Left Rear Wheel Pulser (Trigger Wheel)
31	Right Front Inlet Modulator Unit Solenoid Malfunction
32	Right Front Outlet Modulator Unit Solenoid Malfunction
33	Left Front Inlet Modulator Unit Solenoid Malfunction
34	Left Front Outlet Modulator Unit Solenoid Malfunction
35	Right Rear Inlet Modulator Unit Solenoid Malfunction
36	Right Rear Outlet Modulator Unit Solenoid Malfunction
37	Left Rear Inlet Modulator Unit Solenoid Malfunction
38	Left Rear Outlet Modulator Unit Solenoid Malfunction
41	Right Front Wheel Lock-Up Sensed
42	Left Front Wheel Lock-Up Sensed
43	Right Rear Wheel Lock-Up Sensed
44	Left Rear Wheel Lock-Up Sensed
51	Modulator Unit Pump Motor Locking Up
52	Modulator Unit Pump Motor Stuck Off
53	Modulator Unit Pump Motor Stuck On
54	Fail-Safe Relay Malfunction
61	Ignition Voltage Out Of Specification
62	Ignition Voltage Out Of Specification
71	Different Diameter Tire Sensed
81	Central Processing Unit (CPU)

TCS DIAGNOSTIC TROUBLE CODE IDENTIFICATION

Code	Description
24	Right Front TCS NO Solenoid Malfunction
25	Right Front TCS NC Solenoid Malfunction
26	Left Front TCS NO Solenoid Malfunction
27	Left Front TCS NC Solenoid Malfunction
28	TCS Relay
31	Engine Retard Command Signal
32	Engine Speed Signal
34	Reference Voltage Signal
36	Throttle Position Sensor Output Signal
61	A/T Shift Position Signal
81	Continuous TCS Operation