CELLULAR COMMUNICATION: LEXUS LINK SYSTEM: 3-1; GPS Antenna Error; 2007 MY LX470 [08/2006

Last Modified: 7-3-2017	6.8:8.0.40	Doc ID: RM000001EFY004X
Model Year Start: 2007	Model: LX470	Prod Date Range: [08/2006 - ]
Title: CELLULAR COMMUNICATION: LEXUS LINK SYSTEM: 3-1; GPS Antenna Error; 2007 MY LX470 [08/2006 - ]

DTC

3-1

GPS Antenna Error

DESCRIPTION

This DTC is output when one of the following occurs: 1) the mayday ECU assembly is malfunctioning; or 2) the GPS antenna assembly is malfunctioning.

DTC No.	DTC Detection Condition	Trouble Area
3 - 1	Communication or communication line is abnormal between mayday ECU and GPS antenna	Mayday ECU assembly GPS antenna assembly

1.	INSPECT GPS ANTENNA ASSEMBLY

(a) Disconnect the antenna connector from the ECU.

(b) Measure the resistance of the antenna.

Standard resistance:

Tester Connection	Specified Condition
1 (SIGNAL) - Body ground	50 to 500 Ω

REPLACE GPS ANTENNA ASSEMBLY THEN CLEAR HISTORIC DTC

2.	CHECK OPERATION OF MAYDAY ECU ASSEMBLY

(a) Temporarily replace the mayday ECU and mayday battery with a new one.

(b) Check for the current DTC again.

OK:

System operates normally (red LED off).

NG:

Current DTC 3-1 exists

END (PERFORM REGISTRATION)

REPLACE GPS ANTENNA ASSEMBLY THEN CLEAR HISTORIC DTC