Suzuki sq-416-420-625 Service Manual page 436

7B1-34 AUTOMATIC TRANSMISSION (4 A / T)
STEP
5 4WD LOW switch signal inspection:
(1) With ignition switch ON, check voltage
between C51-1-26 (G16/J20 engines) or
C51-1-5 (H25 engine) terminal of PCM
coupler and ground.
Transfer gear
position
Voltage
Is the result as specified?
6 Is vehicle equipped with cruise control
system?
7 Cruise control signal inspection:
(1) With ignition switch ON, check voltage
between E61-35 (G16/J20 engines) or
E61-3 (H25 engine) terminal of PCM
coupler and ground.
Is it battery voltage?
ACTION
"4L" or "N" "4H" or "2H"
Battery
0 V
voltage
YES
Go to Step 6.
Go to Step 7.
Substitute a known-good
PCM and recheck.
NO
Faulty 4WD LOW switch
or its circuit.
If OK, substitute a known-
good PCM and recheck.
Substitute a known-good
PCM and recheck.
Faulty cruise control
module or its circuit.
If OK, substitute a known-
good PCM and recheck.