Suzuki GA413, Service Manual

Page: 114 / 1246

3B1-16 ELECTRICAL POWER STEERING (P/S) SYSTEM
DIAGNOSTIC FLOW TABLE
STEP ACTION YES NO
1 1) Make sure that SUZUKI scan tool is free from
malfunction and correct cartridge for P/S system
is used.
2) Ignition switch OFF.
3) Check proper connection of SUZUKI scan tool to
DLC.
4) Is connection in good condition?
Go to STEP 2. Properly connect SU-
ZUKI scan tool to DLC.
2 1) Check if communication is possible by trying
communication with other controller (ECM, ABS
control module (if equipped) or SDM (if
equipped)).
2) Is it possible to communicate with other control-
ler?
Go to STEP 3. Repair open in com-
mon section of serial
data circuit (“V/G” wire
circuit) used by all con-
trollers or short to
ground or power circuit
which has occurred
somewhere in serial
data circuit (“V/G” wire
circuit).
3 1) With ignition switch OFF, disconnect 8-pin (“A”)
connector from P/S control module.
2) Check proper connection at “A8” (“V/G” wire) ter-
minal for serial data circuit.
3) If OK, then check resistance between “A8” (“V/G”
wire) terminal and “V/G” wire terminal for serial
data circuit in DLC.
4) Is resistance 1 or less?
Substitute a known-
good P/S control mod-
ule and recheck.
Repair high resistance
or open in “V/G” wire
circuit for P/S system.
Fig. for Step 3
1. DLC
2. “V/W” wire terminal
NOTE:
Upon completion of inspection and repair work, repeat SYSTEM CHECK FLOW TABLE to confirm that the
trouble has been corrected.