Suzuki SWIFT RS415 2017, Руководство по обслуживанию

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6C-21 Power Assisted Steering System:
DTC C1122: Engine Speed Signal Circuit Failure
S4RS0A6304018
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Troubleshooting
5V
RED/BLU E52-14
E49-2 BLK
5V
LT GRN/BLK
E52-1
E49-1 GRN
GRN
BLK
1
2
[B]
[A]
1 2 3 4 5 6 7 8 9
11
10
12 13 14 15 16 17 18 19 20
6
3
2
4
4
4
4
5
1
BRN
E52-12
I4RS0B630008-
[A]: Connector “E52” (viewed from harness side) 2. Ignition switch 5. ECM
[B]: Connector “E49” (viewed from harness side) 3. Junction block assembly 6. P/S control module
1. Main fuse 4. Fuse
DTC detecting condition Trouble area
P/S control module detects all the following conditions for
20 seconds or more
(1 driving cycle detection logic)
• Vehicle speed signal 60 km/h (37 rpm) or more
• Engine speed signal 220 rpm or more • High resistance, open or short in engine speed circuit
• ECM
• P/S control module
Step Action Yes No
1 Was “EPS System Check” performed? Go to Step 2. Go to “EPS System
Check: ”.
2 1) Clear DTC(s) referring to “DTC Clearance: ”.
2) Turn the ignition switch to OFF position.
3) Check if any DTC is detected referring to “DTC Check: ”.
Is DTC C1122 still detected?
Go to Step 3. Check intermittent
trouble referring to
“Intermittent and Poor
Connection Inspection:
in Section 00”.
3 DTC Check for ECM referring to “DTC Check: in Section
1A”.
Is DTC P0340 detected?
Go to “DTC P0340:
Camshaft Position
(CMP) Sensor Circuit:
in Section 1A”. Go to Step 3.
4 1) Check for proper connection to the P/S control module
and ECM at each “BRN” wire terminal (P/S control
module side: “E52-12” terminal, ECM side: Refer to
“ECM Input / Output Circuit diagram” under “Electronic
Control System Description: in Section 1A”.
2) If they are OK, check for high resistance, open or short
to power circuit or ground in “BRN” wire circuit.
Is check result in good condition?
Check P/S control
module power and
ground circuit. If OK,
substitute the original P/
S control module with a
known-good P/S control
module, and then
recheck. Repair “BRN” wire
circuit.