Lexus ES: "B" Camshaft Position Actuator Bank 1 General Electrical Failure (P136201)

Lexus ES (XZ10) Service Manual / Engine & Hybrid System / A25a-fxs (engine Control) / Sfi System / "B" Camshaft Position Actuator Bank 1 General Electrical Failure (P136201)

DESCRIPTION

Refer to DTC P001001.

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DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory	Note
P136201	"B" Camshaft Position Actuator Bank 1 General Electrical Failure	While engine is running, malfunction in rotation direction signal (VTD) of cam timing control motor with EDU assembly is detected for 3 seconds (1 trip detection logic).	Cam timing control motor with EDU assembly Open or short in cam timing control motor with EDU assembly circuit VVT relay ECM	Comes on	DTC stored	SAE Code: P1362

Symptoms and Fail-safe Operation During Cam Timing Control Motor Malfunction

Vehicle Condition	Fail-Safe
Engine difficult to start Lack of power	The cam timing control motor with EDU assembly is operated to the most retarded position.

MONITOR DESCRIPTION

This DTC is output when a rotation direction signal malfunction is detected in the cam timing control motor with EDU assembly. While the engine is running, if a rotation direction signal (VTD) malfunction is detected, a DTC is output (1 trip detection logic).

MONITOR STRATEGY

Related DTCs	P1362: Camshaft position signal range check
Required sensors/Components (Main)	Cam timing control motor with EDU assembly
Required sensors/Components (Related)	-
Frequency of Operation	Continuous
Duration	3 seconds
MIL Operation	Immediate
Sequence of Operation	None

TYPICAL ENABLING CONDITIONS

Monitor runs whenever the following DTCs are not stored	None
All of the following conditions are met	-
Auxiliary battery voltage	11 V or higher
Power switch	On (IG)
VVT motor speed at VVT revolution sensor	100 rpm or higher
Engine speed	100 rpm or higher

TYPICAL MALFUNCTION THRESHOLDS

Either of the following conditions is met	A or B
A. Both of the following conditions are met	(a) and (b)
(a) Current VVT position sensor terminal voltage level	High
(b) Last VVT position sensor terminal voltage level	High
B. Both of the following conditions are met	(c) and (d)
(c) Current VVT position sensor terminal voltage level	Low
(d) Last VVT position sensor terminal voltage level	Low

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
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When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
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Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Turn the Techstream on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the power switch off and wait for at least 30 seconds.
Turn the power switch on (IG) [A].
Turn the Techstream on.
Put the engine in Inspection Mode (Maintenance Mode).
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Start the engine and idle it for 30 seconds or more [B].
Enter the following menus: Powertrain / Engine / Trouble Codes [C].
Read the pending DTCs.
HINT:
- If a pending DTC is output, the system is malfunctioning.
- If a pending DTC is not output, perform the following procedure.
Enter the following menus: Powertrain / Engine / Utility / All Readiness.
Input the DTC: P136201.

Check the DTC judgment result.

Techstream Display	Description
NORMAL	DTC judgment completed System normal
ABNORMAL	DTC judgment completed System abnormal
INCOMPLETE	DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions

HINT:

If the judgment result is NORMAL, the system is normal.
If the judgment result is ABNORMAL, the system has a malfunction.
If the judgment result is INCOMPLETE, perform steps [D] through [E].
[A] to [C]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
When clearing the permanent DTCs, do not disconnect the cable from the auxiliary battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.

With the engine running, drive the vehicle for 5 minutes or more [D].
CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.

HINT:

If the engine stops, further depress the accelerator pedal to restart the engine.
Enter the following menus: Powertrain / Engine / Trouble Codes [E].
Read the pending DTCs.
HINT:
- If a pending DTC is output, the system is malfunctioning.
- If a pending DTC is not output, perform the following procedure.
Enter the following menus: Powertrain / Engine / Utility / All Readiness.
Input the DTC: P136201.
Check the DTC judgment result.
HINT:
- If the judgment result is NORMAL, the system is normal.
- If the judgment result is ABNORMAL, the system has a malfunction.
- [A] to [E]: Normal judgment procedure.
  The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
- When clearing the permanent DTCs, do not disconnect the cable from the auxiliary battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.

WIRING DIAGRAM

Refer to DTC P136001.

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CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following procedure.
Vehicle Control History may be stored in the hybrid vehicle control ECU assembly if the engine is malfunctioning. Certain vehicle condition information is recorded when Vehicle Control History is stored. Reading the vehicle conditions recorded in both the Freeze Frame Data and Vehicle Control History can be useful for troubleshooting.
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(Select Powertrain in Health Check and then check the time stamp data.)

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If any "Engine Malfunction" Vehicle Control History item has been stored in the hybrid vehicle control ECU assembly, make sure to clear it. However, as all Vehicle Control History items are cleared simultaneously, if any Vehicle Control History items other than "Engine Malfunction" are stored, make sure to perform any troubleshooting for them before clearing Vehicle Control History.
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HINT:

Read Freeze Frame Data using the Techstream. The ECM records vehicle and driving condition information as Freeze Frame Data the moment a DTC is stored. When troubleshooting, Freeze Frame Data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE

1.	CHECK TERMINAL VOLTAGE (POWER SOURCE OF CAM TIMING CONTROL MOTOR WITH EDU ASSEMBLY)

(a) Disconnect the cam timing control motor with EDU assembly connector.

*a	Front view of wire harness connector (to Cam Timing Control Motor with EDU Assembly)

(b) Turn the power switch on (IG).

Standard Voltage:

Tester Connection	Condition	Specified Condition
C54-2 (VB1) - Body ground	Power switch on (IG)	11 to 14 V

GO TO STEP 8

2.	CHECK HARNESS AND CONNECTOR (CAM TIMING CONTROL MOTOR WITH EDU ASSEMBLY - BODY GROUND)

(a) Disconnect the cam timing control motor with EDU assembly connector.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
C54-3 (GND) - Body ground	Always	Below 1 Ω

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.	INSPECT CAM TIMING CONTROL MOTOR WITH EDU ASSEMBLY (BODY GROUND)

(a) Check installation condition.

Check that the 3 installation bolts of the cam timing control motor with EDU assembly are tightened to the specified torque.

Torque:

21 N*m (214 kgf*cm, 15 ft.*lbf)

TIGHTEN TO SPECIFIED TORQUE

4.	CHECK HARNESS AND CONNECTOR (CAM TIMING CONTROL MOTOR WITH EDU ASSEMBLY - ECM)

(a) Disconnect the cam timing control motor with EDU assembly connector.

(b) Disconnect the ECM connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
C54-5 (VTD) - C88-71 (EMF1)	Always	Below 1 Ω
C54-5 (VTD) or C88-71 (EMF1) - Body ground and other terminals	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.	REPLACE CAM TIMING CONTROL MOTOR WITH EDU ASSEMBLY

(a) Replace the cam timing control motor with EDU assembly.

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HINT:

Perform "Inspection After Repair" after replacing the cam timing control motor with EDU assembly.

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CLEAR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(d) Clear the DTCs.

Powertrain > Engine > Clear DTCs

(e) Turn the power switch off and wait for at least 30 seconds.

7.	CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

(a) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

(b) Enter the following menus: Powertrain / Engine / Trouble Codes.

Powertrain > Engine > Trouble Codes

Result	Proceed to
DTCs are not output	A
DTC P136201 is output	B

END

REPLACE ECM

8.	INSPECT VVT RELAY

(a) Inspect the VVT relay.

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REPLACE VVT RELAY

9.	CHECK HARNESS AND CONNECTOR (VVT RELAY - CAM TIMING CONTROL MOTOR WITH EDU ASSEMBLY)

(a) Remove the VVT relay from No. 1 engine room relay block and No. 1 junction block assembly.

(b) Disconnect the cam timing control motor with EDU assembly connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
5 (VVT relay) - C54-2 (VB1)	Always	Below 1 Ω
5 (VVT relay) or C54-2 (VB1) - Body ground and other terminals	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

10.	CHECK HARNESS AND CONNECTOR (POWER SOURCE OF VVT RELAY)

*1	No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly
*2	VVT Relay

(a) Remove the VVT relay from No. 1 engine room relay block and No. 1 junction block assembly.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection	Condition	Specified Condition
3 (VVT relay) - Body ground	Always	11 to 14 V

REPAIR OR REPLACE HARNESS OR CONNECTOR (AUXILIARY BATTERY - VVT RELAY)

11.	CHECK HARNESS AND CONNECTOR (POWER SOURCE OF VVT RELAY)

*1	No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly
*2	VVT Relay

(a) Remove the VVT relay from No. 1 engine room relay block and No. 1 junction block assembly.

(b) Turn the power switch on (IG).

Standard Voltage:

Tester Connection	Condition	Specified Condition
1 (VVT relay) - Body ground	Power switch on (IG)	11 to 14 V

REPAIR OR REPLACE HARNESS OR CONNECTOR (VVT RELAY - BODY GROUND)

REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI-MAIN NO. 1 RELAY - VVT RELAY)

SEE MORE:

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Lexus ES: "B" Camshaft Position Actuator Bank 1 General Electrical Failure (P136201)

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