Suzuki Wagon R Manual page 3715

6-4-34 ENGINE GENERAL INFORMATION AND DIAGNOSIS (Z10XEP AND Z12XEP ENGINES)
Test
T04 Tester Display – Step EGR
• Engine running at idle speed, operating temperature
• Accelerator pedal not actuated
• Vehicle stationary
• Press corresponding key in the system main menu to select Out-
put Test under Misc Test, select the desired test and confirm with
ENTER. Follow the instructions in the scan tool display.
• After the test is started, the corresponding component can be actu-
ated using the soft keys.
NOTE:
The behavior of the engine at various different exhaust gas
recirculation rates may tell you if the exhaust gas recirculation
valve is working properly. Depending on the opening of the
exhaust gas recirculation valve a certain amount of exhaust gas
flows back into the intake system and is included in the next
combustion cycle.
If a high amount of exhaust gas is recirculated, the engine will
not have enough oxygen for proper combustion and the engine
will start to jerk. The engine will stall if the exhaust gas recircula-
tion valve is opened even further.
Concerned Terminals:
C36-7, C36-9, C36-50, C36-54
Yes: –
B-16: Check: Knock Sensor
Test
T01 Check: Component
The following test steps must be performed in the given order. If a
fault is found in one test step, the subsequent test steps can be
skipped.
Function Checks
• Check Engine Oil Level
• Loose or defective parts may cause high-frequency vibrations in
the engine block which can disturb the knock sensor. Search the
engine block and it's environment for parts that vibrate but are not
supposed to.
• Loosen the mounting screw of the knock sensor and tighten the
screw again using the specified torque.
Trouble Codes
• With trouble code P0325 recognized:
Refer to Table C-25 Knock Sensor Signal Circuit
Perform the following troubleshooting:
• Refer to Table C-40 Control Module Hard- and Software 1
After successful test/fault repair proceed to the next test step
Yes: –
Work Order Description
Work Order Description
Nominal Value
Test OK?
No: C-26
Nominal Value
No: –