Suzuki GA413, Service Manual

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DIAGNOSIS
The P/S system in this vehicle are controlled by P/S control module. P/S control module has an on-board diagnostic
system which detects a malfunction in this system.
When diagnosing troubles, be sure to have full understanding of the outline of ON-BOARD DIAGNOSTIC SYSTEM
and each item in PRECAUTION IN DIAGNOSING TROUBLE and execute diagnosis according to SYSTEM
CHECK FLOW TABLE.
ON-BOARD DIAGNOSTIC SYSTEM
P/S control module performs on-board diagnosis (self-diagnosis)
on the system and operates “EPS” light (malfunction indicator lamp
(MIL)) as follows.
MIL (“EPS” light) lights when the ignition switch is turned ON
position (but the engine at stop) regardless of the condition of
P/S system. This is only to check the MIL (“EPS” light) bulb and
its circuit.
If the areas monitored by P/S control module is free from any
trouble after the engine start (while engine is running), MIL
(“EPS” light) turns OFF.
When P/S control module detects a trouble which has occurred
in the areas, it makes MIL (“EPS” light) turn ON while the engine
is running to warn the driver of such occurrence of trouble and
at the same time it stores the exact trouble area in P/S control
module back-up memory.
PRECAUTIONS IN DIAGNOSING TROUBLES
Take a note of DTC indicated first.
Be sure to read PRECAUTIONS FOR ELECTRONIC CIRCUIT SERVICE in SECTION 0A before inspection
and observe what is written there.
When two or more troubles have occurred, their DTCs are indicated once each starting with the smallest code
number and up.
DTC C1122 (flashing pattern: 22) (engine speed signal fail) is indicated when ignition switch is ON position and
engine is not running but if indication changes to a normal one when engine is started, it means nothing abnor-
mal.
As DTC is stored in backup memory of P/S control module, be sure to clear memory after repair by performing
the procedure described in DTC CLEARANCE.
3B1-4 ELECTRICAL POWER STEERING (P/S) SYSTEM