On-Vehicle Inspection

WARNING: This page is about a different car, the 2007 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT ANTENNA MOTOR
1. Connect the positive (+) lead from the battery to terminal 3 and the negative (-) lead to terminal 6.
2. Check that the motor turns (moves upward).
  NOTE: These tests must be done quickly (within 3-5 seconds) to prevent the coil from burning out.
  
  Fig 1: Inspecting Antenna Motor (1 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Then, reverse the polarity, check that the motor turns the opposite way (moves downward).
  NOTE: These tests must be done quickly (within 3-5 seconds) to prevent the coil from burning out.
  
  Fig 2: Inspecting Antenna Motor (2 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT ANTENNA SWITCH (w/ NAVIGATION SYSTEM)

Measure the voltage of the air conditioning amplifier.

Standard voltage

ANTENNA SWITCH (W/ NAVIGATION SYSTEM)

Tester Connection	Switch Position	Specified Condition
A45-28 (ANTU) - A47-12 (GND)	Not pushed	Above 8 V
A45-28 (ANTU) - A47-12 (GND)	UP switch pushed	Below 1.5 V
A45-29 (ANTD) - A47-12 (GND)	Not pushed	Above 8 V
A45-29 (ANTD) - A47-12 (GND)	DOWN switch pushed	Below 1.5 V

If the result is not as specified, the receiver may have a malfunction.

INSPECT ANTENNA SWITCH (w/o NAVIGATION SYSTEM)

Measure the voltage of the integration panel control assembly.

Standard voltage

ANTENNA SWITCH (W/O NAVIGATION SYSTEM)

Tester Connection	Switch Position	Specified Condition
A45-28 (ANTU) - A47-12 (GND)	Not pushed	Above 8 V
A45-28 (ANTU) - A47-12 (GND)	UP switch pushed	Below 1.5 V
A45-29 (ANTD) - A47-12 (GND)	Not pushed	Above 8 V
A45-29 (ANTD) - A47-12 (GND)	DOWN switch pushed	Below 1.5 V

If the result is not as specified, the receiver may have a malfunction.

Fig 3: Inspecting Antenna Switch (W/O Navigation System)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT ANTENNA MOTOR CONTROL RELAY

Disconnect the A30 relay connector.

Measure the resistance of the wire harness side connector.

Standard resistance

ANTENNA MOTOR CONTROL RELAY (RESISTANCE)

Tester Connection	Specified Condition
A30-5 (E) - Body ground	Below 1 Ω

Measure the voltage of the wire harness side connector.

Standard voltage

ANTENNA MOTOR CONTROL RELAY (VOLTAGE)

Tester Connection	Condition	Specified Condition
A30-4 (B) - Body ground	Always	10 to 14 V
A30-7 (IG) - Body ground	Ignition switch OFF	Below 1 V
A30-7 (IG) - Body ground	Ignition switch ON	10 to 14 V
A30-17 (ACC) - Body ground	Ignition switch OFF	Below 1 V
A30-17 (ACC) - Body ground	Ignition switch ACC	10 to 14 V
A30-1 (SUP) - Body ground	Ignition switch ON, antenna UP switch not pushed	Above 8 V
A30-1 (SUP) - Body ground	Ignition switch ON, antenna UP switch pushed	Below 1.5 V
A30-9 (SDWN) - Body ground	Ignition switch ON, antenna DOWN switch not pushed	Above 8 V
A30-9 (SDWN) - Body ground	Ignition switch ON	Below 1.5 V

If the results are not as specified, there may be a malfunction on the wire harness side.

Fig 4: Inspecting Antenna Motor Control Relay