Dtc 74-40 Short In Speaker Circuit

Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - AUDIO / VIDEO

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK DTC

CHECK DTC

CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - SPEAKER)

INSPECT FRONT NO. 1 SPEAKER ASSEMBLY

INSPECT FRONT NO. 4 SPEAKER ASSEMBLY

CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - SPEAKER)

INSPECT REAR SPEAKER SET

INSPECT FRONT NO. 2 SPEAKER ASSEMBLY

INSPECT FRONT NO. 3 SPEAKER ASSEMBLY

CHECK HARNESS AND CONNECTOR (FRONT NO. 2 SPEAKER - FRONT NO. 3 SPEAKER)

DTC 74-40 Short in Speaker Circuit

DESCRIPTION

DTC No.DTC Detection ConditionTrouble Area
74-40Short is detected in the speaker output circuit.
Harness or connector
Speaker
Stereo component amplifier assembly

WIRING DIAGRAM

Dtc 74-40 Short In Speaker Circuit. AUDIO / VIDEO. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

INSPECTION PROCEDURE

  • HINT:
  • After the inspection is completed, clear the DTCs.
1.CHECK DTC

Disconnect the F3 and F52 amplifier connectors.

Clear the DTCs.

Check if DTC 74-40 is output.

  • OK:
  • DTC 74-40 is not output.
NG
REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY ()
OK
2.CHECK DTC

Reconnect the F52 amplifier connector.

Clear the DTCs.

Check if DTC 74-40 is output.

  • OK:
  • DTC 74-40 is not output.
NG
Go to step 6
OK
3.CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - SPEAKER)

Disconnect the F3 amplifier connector.

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

  • Standard Resistance:
  • Tester ConnectionConditionSpecified Condition
    F3-8 (CTR+) - Body groundAlways10 kΩ or higher
    F3-7 (CTR-) - Body groundAlways10 kΩ or higher
    F3-1 (WFL+) - Body groundAlways10 kΩ or higher
    F3-5 (WFL-) - Body groundAlways10 kΩ or higher
    F3-2 (WFR+) - Body groundAlways10 kΩ or higher
    F3-6 (WFR-) - Body groundAlways10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
4.INSPECT FRONT NO. 1 SPEAKER ASSEMBLY
Dtc 74-40 Short In Speaker Circuit. AUDIO / VIDEO. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the I10 and I1 speaker connectors.

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

  • Standard Resistance:
  • Tester ConnectionConditionSpecified Condition
    1 - 2Always3 Ω
Text in Illustration
*1Component without harness connected
(Front No. 1 Speaker)
NG
REPLACE FRONT NO. 1 SPEAKER ASSEMBLY ()
OK
5.INSPECT FRONT NO. 4 SPEAKER ASSEMBLY
Dtc 74-40 Short In Speaker Circuit. AUDIO / VIDEO. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the F6 speaker connector.

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

  • Standard Resistance:
  • Tester ConnectionConditionSpecified Condition
    1 - 2Always6 Ω
Text in Illustration
*1Component without harness connected
(Front No. 4 Speaker)
NG
REPLACE FRONT NO. 4 SPEAKER ASSEMBLY ()
OK
REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY ()
6.CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - SPEAKER)

Disconnect the F52 amplifier connector.

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

  • Standard Resistance:
  • Tester ConnectionConditionSpecified Condition
    F52-8 (FL-) - Body groundAlways10 kΩ or higher
    F52-3 (FL+) - Body groundAlways10 kΩ or higher
    F52-9 (FR-) - Body groundAlways10 kΩ or higher
    F52-10 (FR+) - Body groundAlways10 kΩ or higher
    F52-5 (RR+) - Body groundAlways10 kΩ or higher
    F52-12 (RR-) - Body groundAlways10 kΩ or higher
    F52-4 (RL+) - Body groundAlways10 kΩ or higher
    F52-11 (RL-) - Body groundAlways10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
7.INSPECT REAR SPEAKER SET
Dtc 74-40 Short In Speaker Circuit. AUDIO / VIDEO. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the J17 and J15 speaker connectors.

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

  • Standard Resistance:
  • Tester ConnectionConditionSpecified Condition
    1 - 2Always4 Ω
Text in Illustration
*1Component without harness connected
(Rear Speaker Set)
NG
REPLACE REAR SPEAKER SET ()
OK
Go to step 9
8.INSPECT FRONT NO. 2 SPEAKER ASSEMBLY
Dtc 74-40 Short In Speaker Circuit. AUDIO / VIDEO. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the F8 and F7 speaker connectors.

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

  • Standard Resistance:
  • Tester ConnectionConditionSpecified Condition
    1 - 2AlwaysBelow 1 Ω
    3 - 4AlwaysBelow 1 Ω
    2 - 4Always4 Ω
Text in Illustration
*1Component without harness connected
(Front No. 2 Speaker)
NG
REPLACE FRONT NO. 2 SPEAKER ASSEMBLY ()
OK
Go to step 10
9.INSPECT FRONT NO. 3 SPEAKER ASSEMBLY
Dtc 74-40 Short In Speaker Circuit. AUDIO / VIDEO. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the F14 and F13 speaker connectors.

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

  • Standard Resistance:
  • Tester ConnectionConditionSpecified Condition
    1 - 2Always4 Ω
Text in Illustration
*1Component without harness connected
(Front No. 3 Speaker)
NG
REPLACE FRONT NO. 3 SPEAKER ASSEMBLY ()
OK
10.CHECK HARNESS AND CONNECTOR (FRONT NO. 2 SPEAKER - FRONT NO. 3 SPEAKER)

Disconnect the F8, F7, F14 and F13 speaker connectors.

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

  • Standard Resistance:
  • for LH:
  • Tester ConnectionConditionSpecified Condition
    F8-2 (TWL+) - F14-1AlwaysBelow 1 Ω
    F8-4 (TWL-) - F14-2
    F8-2 (TWL+) - Body groundAlways10 kΩ or higher
    F8-4 (TWL-) - Body ground
  • for RH:
  • Tester ConnectionConditionSpecified Condition
    F7-2 (TWR+) - F13-1AlwaysBelow 1 Ω
    F7-4 (TWR-) - F13-2
    F7-2 (TWR+) - Body groundAlways10 kΩ or higher
    F7-4 (TWR-) - Body ground
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY ()