Suzuki GRAND VITARA JB416 Service Manual page 143

Troubleshooting
Step
1 Transfer position indicator power supply check
1) Turn ignition switch to ON position.
Do other indicators come ON?
2 Check DTC
1) Connect scan tool to DLC with ignition switch OFF.
2) Turn ignition switch to ON position and check DTC.
Is there DTC(s) U1073, U1100, U1101 and/or U1121?
3 CAN communication circuit check
1) Check CAN communication circuit between combination
meter and 4WD control module referring to "DTC U1073:
Control Module Communication Bus Off: Motor-Shift
Type (Transfer with Shift Actuator)".
Is CAN communication circuit in good condition?
4 "METER" fuse check
1) Turn ignition switch to OFF position.
2) Check for fuse blown to "METER" fuse in junction block
assembly.
Is "METER" fuse in good condition?
5 Combination meter power supply check
1) Remove combination meter referring to "Combination
Meter Removal and Installation: in Section 9C in related
manual".
2) Check proper connection to combination meter
connector at "G28-13" and "G28-15" terminals.
3) If OK, then turn ignition switch to ON position and
measure voltage between combination meter connector
at "G28-13" terminal and vehicle body ground.
Is it 10 – 14 V?
6 Combination meter ground circuit check
1) Turn ignition switch to OFF position.
2) Measure resistance between combination meter
connector at "G28-15" terminal and vehicle body ground.
Ω
Is resistance 1 or less?
Transfer: Motor-Shift Type (Transfer with Shift Actuator) 3C-26
Action Yes
Go to Step 2.
Go to applicable DTC
diag. flow.
Go to Step 4.
Go to Step 5.
Go to Step 6.
Substitute a known-
good combination meter
and recheck. If transfer
position indicator still
remains OFF, substitute
a known-good 4WD
control module and
recheck.
No
Go to Step 3.
Substitute a known-
good combination meter
and recheck. If transfer
position indicator still
remains off, substitute a
known-good 4WD
control module and
recheck.
Repair or replace.
Replace "METER" fuse
and check for short.
"PPL/RED" wire is open
circuit.
"BLK" wire is open or
high resistance circuit.