Suzuki Wagon R Plus RB310, Service Manual

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6-2-64 ENGINE GENERAL INFORMATION AND DIAGNOSIS (M13 ENGINE)
DTC P0011 Camshaft Position – Timing Over-Advanced or System Perfor-
mance
DTC P0012 Camshaft Position – Timing Over-Retarded
Description
Actual value of advanced valve timing does not reach target value.
Valve timing is advanced although ECM command is most retarding.
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) Clear DTC. Refer to “DTC Clearance”
2) Start engine and drive vehicle under usual driving condition for 5 minutes or longer until engine is warmed
up to normal operating temperature.
3) Stop vehicle.
4) Run engine at idle speed for 1 minute.
5) Start vehicle and increase vehicle speed up to 80 km/h (50 mile/h).
6) Keep vehicle speed at 80 km/h (50 mile/h) for 1 minute or longer at 5th gear position or D range.
7) Decrease vehicle speed gradually.
8) Stop vehicle and ignition switch OFF.
9) Repeat step 4) to 7) one time.
10) Stop vehicle.
Check DTC. Refer to “DTC Check” in this section.
Troubleshooting
DTC Detecting Condition Trouble Area
Actual valve of advanced valve timing does not reach target
value, or valve timing is advanced although ECM command is
most retarding.
(2 driving cycle detection logic) • Oil control valve
• Oil galleries of timing sprocket
• Intake camshaft timing sprocket
(VVT actuator)
Step Action Yes No
1 Is DTC P0010 detected together? Go to “DTC P0010
Camshaft Position
Actuator Circuit” in
this section. Go to Step 2.
2 Do you have SUZUKI scan tool? Go to Step 3. Go to Step 5.
3 VVT GAP Check
1) With ignition switch turned OFF, connect SUZUKI scan
tool.
2) Start engine and warm up to normal operating tempera-
ture.
3) Select menu to DATA LIST.
4) Check that the VVT GAP displayed on SUZUKI scan tool is
0 – 5°.
Is it OK?
Go to Step 4. Check valve timing
referring to “2nd
Timing Chain and
Chain Tensioner
Removal and
Installation” in
Section 6A1.
If OK, go to Step
5.