Suzuki 2000 Grand Vitara SQ625 Service Manual page 241

6-1-130 ENGINE (H25 ENGINE)
STEP
2 A/C Condenser Fan Control Signal check:
(1) Remove ECM (PCM) cover.
(2) Check voltage between E61-5 and ground under
following conditions.
Other than conditions A and B in Step 1: 10 – 14 V
Under condition A or B in Step 1: 0 – 1 V
Are check results as specified?
ACTION YES
Fuse 29 blown,
faulty "R/B", "R/Bl",
or "B" wire, faulty
A/C condenser fan
motor or relay.
NO
Fuse 23 blown,
faulty "Y/G", "Y/Bl"
wire or A/C
condenser fan relay.
If OK, substitute a
known-good ECM
(PCM) and recheck.