Toyota 1KZ-TE Repair Manual page 189

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A/ C S ignal Circuit
CIRCUIT DESCRIPTION
When the A/C compressor is on, the A/C amplifier sends an A/C signal to the engine ECU, then engine ECU
increases the fuel injection volume to improve the driveability during the engine idling.
WIRING DIAGRAM
Hilux, Land Cruiser/LandCruiser Prado
A/C Amplifier
4Runner
A/C Amplifier
1KZ- -TE ENGINE SUP (RM790E)
DIAGNOSTICS
Y (Hilux)
L--Y (LandCruiser/
Land Cruiser Prado)
8
2
*
IM1--8(Hilux)
IK2--11 (LandCruiser/
Land Cruiser Prado)
13
A36
- - ENGINE
Y (Hilux)
L--Y (LandCruiser/
2
*
Land Cruiser Prado)
2
*
1
*
E6 (Hilux)
E7 (LandCruiser/
Land Cruiser Prado)
L--Y
1KZ-TE PAGES FROM SUPPLEMENT
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Engine ECU
4
AC1
1
*
Engine ECU
4
AC1
E17
CONTINUED
DI- -125
DI8FT- -01
A15052
A15415