2001 TOYOTA HIGHLANDER Service Repair Manual

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Page 1625 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual A87978
C2
OCV
1
2ECM
OC1+
OC1- E9
E9 16
15 G-W
G-R
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-57
247 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Read f

Page 1626 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual A67528A87357
OCV Signal Waveform
1 msec./Division5 V/
Division
GNDOC1 +
OC1-E9
ECM
Y
A54386
A81698
A85431
Wire Harness Side
C2
OCV
E9
ECM
OC1+
OC1-
05-58
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
248 Author:

Page 1627 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual A53155
Wire Harness Side
C2
OCV
A67528A87357
OCV Signal Waveform
1 msec./Division5 V/
Division
GNDE9
ECM
OC1 +
OC1-
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-59
249 Author: Date:
2005 HIGHLANDER REPAIR MA

Page 1628 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual Y
A54386
A81698
A85431
Wire Harness Side
C2
OCV
E9
ECM
OC1+
OC1-
05-60
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
250 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 CHECK WIRE HARNESS (OCV - ECM)
(

Page 1629 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual - DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-61
251 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0011 CAMSHAFT POSITION ºAº -TIMING OVER-
ADVANCED OR SYSTEM PERFORMANCE
(BANK 1)
DTC P0012 C

- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-61
251 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0011 CAMSHAFT POSITION ºAº -TIMING OVER-
ADVANCED OR SYSTEM PERFORMANCE
(BANK 1)
DTC P0012 CAMSHAFT POSITION ºAº -TIMING OVER-
RETARDED (BANK 1)
CIRCUIT DESCRIPTION
Refer to DTC P0010 on page 05-55.
DTC No.DTC Detection ConditionTrouble Area
P0011
After engine is warmed up and engine speed is at 550 to 4,000
rpm, condition (a) continues (1 trip detection logic)
(a) Valve timing does not change from current valve timing
(Problem of advanced valve timing)Valve timing
OCV
VVT controller assembly
ECM
P0012
After engine is warmed up and engine speed is at 550 to 4,000
rpm, condition (a) continues (2 trip detection logic)
(a) Valve timing does not change from current valve timing
(Problem of retarded valve timing)
Same as DTC No. P0011
MONITOR DESCRIPTION
The ECM optimizes the valve timing using the Variable Valve Timing (VVT) system to control the intake valve
camshaft. The VVT system includes the ECM, the Oil Control Valve (OCV) and the VVT controller. The ECM
sends a target duty-cycle control signal to the OCV. This control signal, sent to the OCV, regulates the oil
pressure applied to the VVT controller. The VVT controller can advance or retard the intake valve camshaft.
Example:
A DTC will be set if: 1) the difference between the ºtargetº and ºactualº valve timing is more than 5 degrees
of the camshaft angle (CA) and the condition continues for more than 4.5 seconds; or 2) the OCV is forcibly
activated 63 times or more.
Advanced cam DTCs are subject to º1 tripº detection logic.
Retarded cam DTCs are subject to º2 tripº detection logic.
MONITOR STRATEGY
Related DTCsP0011: Advanced camshaft timing
P0012: Retarded camshaft timing
Required sensors / components (Main)VVT OCV and VVT Actuators
Required sensors / components (Related)CKP, CMP and ECT sensors
Frequency of operationOnce per driving cycle
DurationWithin 10 sec.
MIL operationP0011: Immediate
P0012: 2 driving cycles
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
The monitor will run whenever these DTCs are not presentSee page 05-16
Battery voltage11 V or more
Throttle position learningCompleted
Engine RPM550 to 4,000 rpm
ECT75 to 100C (167 to 212F)
05ESU-05

Page 1630 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual 05-62
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
252 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
TYPICAL MALFUNCTION THRESHOLDS
Deviation of valve timingMore than 5CA (Crankshaft Angle)
OCV activ

Page 1631 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual A67528A87357
OCV Signal Waveform
1 msec./Division5 V/
Division
GNDE9
ECM
OC1 +
OC1-
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-63
253 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 CHECK IF DTC

Page 1632 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual 05-64
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
254 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
5 CHECK OIL CONTROL VALVE FILTER
OK: The filter is not clogged.
NG REPLACE OIL CONTROL VALVE FILTER

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