THEFT DETERRENT / KEYLESS ENTRY: SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function): DESCRIPTION (2008 LX570)

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Last Modified: 11-27-2007		1.6 C
Service Category: Vehicle Interior	Section: Theft Deterrent/Keyless Entry
Model Year: 2008	Model: LX570	Doc ID: RM0000026HJ00EX
Title: THEFT DETERRENT / KEYLESS ENTRY: SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function): DESCRIPTION (2008 LX570)

DTC

B2281

"P" Signal Malfunction

DESCRIPTION

This DTC is stored when there is an abnormal circuit between the main body ECU and the shift lock control ECU.

DTC Code	Detection Condition	Trouble Area
B2281	Communication or the communication line between the main body ECU and shift lock control ECU is abnormal.	Main body ECU Shift lock control ECU Harness or connector

1.	READ VALUE USING TECHSTREAM (SHIFT P SIGNAL)

(a) Use the Data List to check if the shift position signal is functioning properly.

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

Shift P Signal

Shift P position signal/ON or OFF

ON: Shift lever in P

OFF: Shift lever not in P

Result	Proceed to
Display on the Techstream does not change according to shift lever operation	A
Display on the Techstream changes according to shift lever operation	B

2.	INSPECT SHIFT LOCK CONTROL ECU SUB-ASSEMBLY

(a) Disconnect the E51 shift lock control ECU connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
11 (P2) - 3 (E)	Shift lever not in P	Below 1 Ω
11 (P2) - 3 (E)	Shift lever in P	10 kΩ or higher

3.	CHECK HARNESS AND CONNECTOR (SHIFT LOCK CONTROL ECU - MAIN BODY ECU AND BODY GROUND)

(a) Disconnect the E4 main body ECU connector.

(b) Disconnect the E51 shift lock control ECU connector.

Standard Resistance: