Suzuki 2000 Grand Vitara SQ416, Service Manual

Page: 239 / 729

YH4
GRAND
VITARA
6-1-128 ENGINE (H25 ENGINE)
STEP ACTION YES NO
2 A / C ON Signal check:
(1) Check voltage between E61-27 and ground under
following conditions.
Engine running and A / C switch and / or heater
blower switch OFF 0 – 1.5 V
Ignition switch ON and both A / C switch and heater
blower switch ON 10 – 14 V
Are check results as specified?
A / C signal circuit is
in good condition. Faulty “Gr / W”, poor
performance of ECT
sensor, TP sensor,
inputted engine
start signal or faulty
A / C control module.
If none of the above
exists, substitute a
known-good ECM
(PCM) and recheck.