Service Circuit Signal (SCS) Method

WARNING: This page is about a different variant/trim than selected.

NOTE: See Honda PGM Tester manual for specific operating instructions. System will not indicate DTC unless brake pedal is NOT depressed, TCS switch is NOT pushed, ignition switch is turned on, engine is stopped and SCS circuit is shorted to body ground before ignition is turned on. Depressing brake pedal during DTC retrieval will cause DTCs to erase.

Turn ignition off. Connect Honda PGM Tester to Data Link Connector (DLC), located under driver's side of instrument panel, near center console. See Figure .
Using PGM tester, short Service Check Signal (SCS) circuit to ground. Turn ignition on. If any DTCs are stored in memory, ABS or TCS indicator light will flash DTCs. See Fig 1 . See ABS DIAGNOSTIC TROUBLE CODES INDEX and TCS DIAGNOSTIC TROUBLE CODES INDEX table.
If DTCs are present, perform diagnostic procedure. See appropriate test under ABS DIAGNOSTIC TESTS or TCS DIAGNOSTIC TESTS . If no DTC is stored in memory, ABS or TCS indicator light will go off for 3.6 seconds, then come back on.

Fig 1: Identifying ABS Indicator Light & TCS Indicator Light Sequence For Retrieving DTCs

Courtesy of AMERICAN HONDA MOTOR CO., INC.

ABS DIAGNOSTIC TROUBLE CODES INDEX

ABS DTC

Description

Right Front Wheel Sensor, Open Or Short

12 ⁽¹⁾

Right Front Wheel Sensor, Electrical Noise Or Intermittent

Left Front Wheel Sensor, Open Or Short

14 ⁽¹⁾

Left Front Wheel Sensor Electrical Noise Or Intermittent

Right Rear Wheel Sensor, Open Or Short

16 ⁽¹⁾

Right Rear Wheel Sensor, Electrical Noise Or Intermittent

Left Rear Wheel Sensor, Open Or Short

18 ⁽¹⁾

Left Rear Wheel Sensor, Electrical Noise Or Intermittent

21 ⁽¹⁾

Right Front Pulser

22 ⁽¹⁾

Left Front Pulser

23 ⁽¹⁾

Right Rear Pulser

24 ⁽¹⁾

Left Rear Pulser

Right Front Inlet Solenoid

Right Front Outlet Solenoid

Left Front Inlet Solenoid

Left Front Outlet Solenoid

Right Rear Inlet Solenoid

Right Rear Outlet Solenoid

Left Rear Inlet Solenoid

Left Rear Outlet Solenoid

Right Front Wheel Lock

Left Front Wheel Lock

Right Rear Wheel Lock

Left Rear Wheel Lock

51 ⁽¹⁾

Motor Lock

52 ⁽¹⁾

Motor Stuck Off

53 ⁽¹⁾

Motor Stuck On

Fail-Safe Relay

61 ⁽²⁾

Low Ignition Voltage

62 ⁽²⁾

High Ignition Voltage

Different Diameter Tire

Central Processing Unit (CPU) & Read Only Memory/Random Access Memory (ROM/RAM) Diagnoses

⁽¹⁾	ABS indicator light goes off when ignition is cycled off, then on, vehicle is driven again and ABS system is okay.

⁽²⁾	ABS indicator light goes off automatically when ABS system returns to normal.

TCS DIAGNOSTIC TROUBLE CODES INDEX

TCS DTC	Description
24	Right Front TCS NO Solenoid
25	Right Front TCS NC Solenoid
26	Left Front TCS NO Solenoid
27	Left Front TCS NC Solenoid
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