Suzuki GA413, Service Manual

Page: 121 / 1246

ELECTRICAL POWER STEERING (P/S) SYSTEM 3B1-23
DTC C1151 CLUTCH CIRCUIT FAIL
1. To main fuse
2. Ignition switch
3. “EPS” fuse (30A) in fuse box
4. “IG METER” fuse (15A) in fuse box 5. P/S control module
6. Motor and clutch
7. Connector “A”
8. Connector “C”
CAUTION:
Be sure to perform SYSTEM CHECK FLOW TABLE before starting diagnosis according to flow table
of each DTC.
STEP ACTION YES NO
1 1) Remove steering column lower cover.
2) Check proper connection for 4-pin (“B”) connector to
P/S control module.
3) If OK, start engine.
4) Check voltage between “B3” terminal and body ground
with “B” connector connected to P/S control module.
5) Is it 0 V?
Go to STEP 2. Repair poor connec-
tion, high resistance,
open or short to pow-
er circuit or ground in
“B3” circuit.
2 1) Check voltage between “B4” terminal and body ground
with “B” connector connected to P/S control module.
2) Is it 10 – 14 V with steering wheel held at position for
vehicle to run straight?
Go to STEP 3. Repair poor connec-
tion, high resistance,
open or short to pow-
er circuit or ground in
“B4” circuit.
3 1) Check motor and its circuit. Refer to ON-VEHICLE
INSPECTION of MOTOR AND CLUTCH.
2) Is clutch in good condition?
Substitute a known-
good P/S control
module and recheck.
Replace clutch and
recheck.
Fig. for Step 1 Fig. for Step 2
NOTE:
Upon completion of inspection and repair work, repeat SYSTEM CHECK FLOW TABLE to confirm that the
trouble has been corrected.