AIR CONDITIONER CONTROL SIGNAL

AT-7112spec table

CONSULT-II reference-value table conditions list 'When ABS operates / does not operate' — copied as printed. Title 'AIR CONDITIONER CONTROL SIGNAL' is the signal that TCM toggles to disable A/C compressor; ABS-keyed conditions may be a manual typo (likely should read 'When A/C operates'), but transcribed as printed.

Description

Turn off the air conditioner compressor, when hard braking.

CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE

NOTE

Remarks: Specification data are reference value.

CONSULT-II reference values — A/C control signal

Monitor item	Condition	Specification
A/C CTRL SIG	When ABS operates.	Battery voltage
A/C CTRL SIG	When ABS does not operates	Approximately. 0V

A/C CTRL SIG

ConditionWhen ABS operates.

SpecificationBattery voltage

A/C CTRL SIG

ConditionWhen ABS does not operates

SpecificationApproximately. 0V

TCM TERMINALS AND REFERENCE VALUE

NOTE

Remarks: Specification data are reference value.

TCM terminals — air conditioner control signal

Terminal No.	Wire color	Item	Condition	Judgement standard (Approx.)
19	W	Air conditioner control signal (IDLE UP RELAY)	When ABS operates.	Battery voltage
19	W	Air conditioner control signal (IDLE UP RELAY)	When ABS does not operates	0V
39	Y/L	Air conditioner signal (A/C RELAY)	When air conditioner operates.	0V
39	Y/L	Air conditioner signal (A/C RELAY)	When air conditioner does not operate.	Battery voltage

Wire colorW

ItemAir conditioner control signal (IDLE UP RELAY)

ConditionWhen ABS operates.

Judgement standard (Approx.)Battery voltage

Wire colorW

ItemAir conditioner control signal (IDLE UP RELAY)

ConditionWhen ABS does not operates

Judgement standard (Approx.)0V

Wire colorY/L

ItemAir conditioner signal (A/C RELAY)

ConditionWhen air conditioner operates.

Judgement standard (Approx.)0V

Wire colorY/L

ItemAir conditioner signal (A/C RELAY)

ConditionWhen air conditioner does not operate.

Judgement standard (Approx.)Battery voltage

ON BOARD DIAGNOSIS LOGIC

Code 7th judgement flicker

A/C CTRL SIG

Possible Causes

Harness or connectors (The Air conditioner circuit is open or shorted.)
Air conditioner relay

DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE

CAUTION

Always drive vehicle at a safe speed.

NOTE

If "DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE" has been previously conducted, always turn ignition switch "OFF" and wait at least 5 seconds before conducting the next test.

After the repair, perform the following procedure to confirm that the malfunction is eliminated.

With CONSULT-II

A/C control signal confirmation procedure (With CONSULT-II)

1
Turn ignition switch "ON" and select "DATA MONITOR" mode for "A/T" with CONSULT-II. If the check result is NG, go to "Diagnostic Procedure", AT-7115.
SAT651J
2
Start engine and maintain the following conditions for at least 5 consecutive seconds.

Without CONSULT-II

A/C control signal confirmation procedure (Without CONSULT-II)

1
Start engine.
2
Drive vehicle in D position.
3
Perform self-diagnosis.

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AIR CONDITIONER CONTROL SIGNAL

Description

CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE

CONSULT-II reference values — A/C control signal

TCM TERMINALS AND REFERENCE VALUE

TCM terminals — air conditioner control signal

ON BOARD DIAGNOSIS LOGIC

Possible Causes

DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE

With CONSULT-II

A/C control signal confirmation procedure (With CONSULT-II)

Without CONSULT-II

A/C control signal confirmation procedure (Without CONSULT-II)

See also

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