Suzuki Wagon R Manual page 141

3B1-20 ELECTRICAL POWER STEERING (EPS) SYSTEM (IF EQUIPPED)
DTC C1121/C1123/C1124 VSS CIRCUIT FAIL
STEP
1 Was "SYSTEM CHECK FLOW TABLE"
performed?
2 1) Ignition switch to OFF position.
2) Remove steering column hole cover.
3) Disconnect 8-pin ("A") connector from P/S
control module.
4) Check proper connection to P/S control
module at terminal "A4" ("V" wire).
5) If OK, connect voltmeter between "A4"
("V" wire) terminal and body ground with "A"
connector connected.
6) Hoist front end of vehicle and lock front right
tire.
7) Turn front left tire quickly with ignition switch is
ON position.
Does voltmeter indicated deflection between
0 – 1 V and 9 – 11 V a few times while tire is turned
one revolution?
Fig. for Step 2
ACTION
12
1. Main fuse box
2. "EPS" fuse
3. Ignition switch
4. Circuit fuse box
5. "IG coil" fuse (15A)
6. Combination meter
7. Speedometer
8. "EPS" warning lamp
9. To vehicle speed sensor (VSS)
10. P / S control module
11. P / S control module body ground
12. Connector "A"
YES
Go to Step 2.
Check intermittent
trouble referring to
"INTERMITTENT
TROUBLE" in
SECTION 0A.
If OK, substitute a
known-good P/S
control module and
recheck.
NO
Go to "SYSTEM
CHECK FLOW
TABLE" in this section.
Repair VSS or its
("V" wire) circuit
referring to SECTION
6E.