CRUISE CONTROL SYSTEM(except 2AR-FE) TERMINALS OF ECM

CHECK ECM

Tech Tips

The standard voltage, resistance and waveform between each pair of the ECM terminals is shown in the table below. The appropriate conditions for checking each pair of the terminals is also indicated. The result of checks should be compared with the standard voltage, resistance and waveform for each pair of the terminals as displayed in the Specified Condition column. The illustration above can be used as a reference to identify the ECM terminal locations.

Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
A23-1 (BATT) - C96-53 (E1)	R - W-B	Battery (for measuring battery voltage and for ECM memory)	Always	11 to 14 V
C96-139 (D) - C96-53 (E1)	R - W-B	D shift position signal	Engine switch on (IG), shift lever in D	11 to 14 V
C96-139 (D) - C96-53 (E1)	R - W-B	D shift position signal	Engine switch on (IG), shift lever not in D	Below 1 V
A23-17 (S) - C96-53 (E1)	GR - W-B	S shift position signal	Engine switch on (IG), shift lever in S	11 to 14 V
A23-17 (S) - C96-53 (E1)	GR - W-B	S shift position signal	Engine switch on (IG), shift lever not in S	Below 1 V
A23-27 (STP) - C96-53 (E1)	SB - W-B	Stop light switch signal	Brake pedal depressed	11 to 14 V
A23-27 (STP) - C96-53 (E1)	SB - W-B	Stop light switch signal	Brake pedal released	Below 1 V
A23-41 (CCS) - C96-53 (E1)	R - W-B	Steering pad switch circuit	Cruise control switch not pushed	1 MΩ or higher
			Cruise control main switch pushed	Below 2.5 Ω
			+RES switch pushed	235 to 245 Ω
			-SET switch pushed	617 to 643 Ω
			CANCEL switch pushed	1509 to 1571 Ω
A23-42 (ST1-) - C96-53 (E1)	LG - W-B	Stop light switch signal	Engine switch on (IG), brake pedal depressed	Below 1 V
A23-42 (ST1-) - C96-53 (E1)	LG - W-B	Stop light switch signal	Engine switch on (IG), brake pedal released	11 to 14 V
A23-37 (SFTD) - C96-53 (E1)	W - W-B	Down-shift position switch signal	Engine switch on (IG), shift lever in S	11 to 14 V
A23-37 (SFTD) - C96-53 (E1)	W - W-B	Down-shift position switch signal	Engine switch on (IG), shift lever in "-"	Below 1 V
A23-38 (SFTU) - C96-53 (E1)	G - W-B	Up-shift position switch signal	Engine switch on (IG), shift lever in S	11 to 14 V
A23-38 (SFTU) - C96-53 (E1)	G - W-B	Up-shift position switch signal	Engine switch on (IG), shift lever in "+"	Below 1 V