Inspection Procedure

CHECK VEHICLE EQUIPMENT

Vehicle equipment

VEHICLE EQUIPMENT

Vehicle equipment	Proceed to
6 speaker system	A
9 speaker system	B

B: Go to step 7

A: Go to next step

CHECK WIRE HARNESS (RADIO RECEIVER - SPEAKER)

Disconnect the R3 and R4 receiver connectors.
Disconnect the T6, T7, R11 and R12 speaker connectors.

Measure the resistance of the wire harness side connectors.

Standard resistance

STANDARD RESISTANCE

Tester Connection	Specified Condition
R3-2 (FL+) - T6-4	Below 1 Ω
R3-6 (FL-) - T6-2	Below 1 Ω
R3-1 (FR+) - T7-4	Below 1 Ω
R3-5 (FR-) - T7-2	Below 1 Ω
R4-2 (RL+) - R11-1	Below 1 Ω
R4-6 (RL-) - R11-2	Below 1 Ω
R4-1 (RR+) - R12-1	Below 1 Ω
R4-3 (RR-) - R12-2	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

Fig 1: Identifying R3 And R4 Receiver Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step

CHECK WIRE HARNESS (FRONT NO. 1 SPEAKER - FRONT NO. 2 SPEAKER)

Disconnect the F12, F13, T6 and T7 speaker connectors.

Measure the resistance of the wire harness side connectors.

Standard resistance

STANDARD RESISTANCE

Tester Connection	Specified Condition
F12-1 - T6-3	Below 1 Ω
F12-2 - T6-1	Below 1 Ω
F13-1 - T7-3	Below 1 Ω
F13-2 - T7-1	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

Fig 2: Identifying F12, F13, T6 And T7 Speaker Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step

INSPECT FRONT NO. 1 SPEAKER

Disconnect the F12 and F13 speaker connectors.

Measure the resistance of the speaker.

Standard resistance

STANDARD RESISTANCE

Tester Connection	Specified Condition
1-2	Approximately 4 Ω

NG: REPLACE FRONT NO. 1 SPEAKER

Fig 3: Identifying F12 And F13 Speaker Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step

INSPECT FRONT NO. 2 SPEAKER
1. Check that the malfunction disappears when the speaker is replaced with a normal one.
  OK:
  
  Malfunction disappears.
  
  HINT:
  - Connect all the connectors to the front No. 2 speakers.
  - When there is a possibility that either the right or left front speaker is defective, inspect by interchanging the right one with the left one.
  - Perform the inspection above on both LH and RH sides.
NG: REPLACE FRONT NO. 2 SPEAKER

OK: Go to next step

INSPECT REAR NO. 1 SPEAKER

Disconnect the R11 and R12 speaker connectors.

Measure the resistance of the speaker.

Standard resistance

STANDARD RESISTANCE

Tester Connection	Specified Condition
1-2	Approximately 4 Ω

NG: REPLACE REAR NO. 1 SPEAKER

Fig 4: Identifying R11 And R12 Speaker Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: REPLACE RADIO RECEIVER

CHECK WIRE HARNESS (STEREO COMPONENT AMPLIFIER - SPEAKER)

Disconnect the S14 and S29 amplifier connectors.
Disconnect the C8, F12, F13, T6, T7, T8 and T9 speaker connectors.

Measure the resistance of the wire harness side connectors.

Standard resistance

STANDARD RESISTANCE

Tester Connection	Specified Condition
S29-2 (WFL+) - F12-1	Below 1 Ω
S29-1 (WFL-) - F12-2	Below 1 Ω
S29-9 (WFR+) - F13-1	Below 1 Ω
S29-3 (WFR-) - F13-2	Below 1 Ω
S14-8 (FL+) - T6-4	Below 1 Ω
S14-7 (FL-) - T6-2	Below 1 Ω
S14-2 (FR+) - T7-4	Below 1 Ω
S14-6 (FR-) - T7-2	Below 1 Ω
S14-3 (RL+) - T8-4	Below 1 Ω
S14-9 (RL-) - T8-2	Below 1 Ω
S14-10 (RR+) - T9-4	Below 1 Ω
S14-4 (RR-) - T9-2	Below 1 Ω
S29-4 (CTR+) - C8-2	Below 1 Ω
S29-10 (CTR-) - C8-1	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

Fig 5: Identifying S14 And S29 Amplifier Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step

CHECK WIRE HARNESS (REAR NO. 1 SPEAKER - REAR NO. 2 SPEAKER)

Disconnect the R11, R12, T8 and T9 speaker connectors.

Measure the resistance of the wire harness side connectors.

Standard resistance

STANDARD RESISTANCE

Tester Connection	Specified Condition
R11-1 - T8-3	Below 1 Ω
R11-2 - T8-1	Below 1 Ω
R12-1 - T9-3	Below 1 Ω
R12-2 - T9-1	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

Fig 6: Identifying R11, R12, T8 And T9 Speaker Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step

INSPECT FRONT NO. 1 SPEAKER

Disconnect the F12 and F13 speaker connectors.

Measure the resistance of the speaker.

Standard resistance

STANDARD RESISTANCE

Tester Connection	Specified Condition
1-2	Approximately 4 Ω

NG: REPLACE FRONT NO. 1 SPEAKER

Fig 7: Identifying F12 And F13 Speaker Connectors

OK: Go to next step

INSPECT FRONT NO. 2 SPEAKER
1. Check that the malfunction disappears when the speaker is replaced with a normal one.
  OK:
  
  Malfunction disappears
  
  HINT:
  - Connect all the connectors to the front No. 2 speakers.
  - When there is a possibility that either the right or left front speaker is defective, inspect by interchanging the right one with the left one.
  - Perform the inspection above on both LH and RH sides.
NG: REPLACE FRONT NO. 2 SPEAKER

OK: Go to next step

INSPECT REAR NO. 1 SPEAKER

Disconnect the R11 and R12 speaker connectors.

Measure the resistance of the speaker.

Standard resistance

STANDARD RESISTANCE

Tester Connection	Specified Condition
1-2	Approximately 4 Ω

NG: REPLACE REAR NO. 1 SPEAKER

Fig 8: Identifying R11 And R12 Speaker Connectors

OK: Go to next step

INSPECT REAR NO. 2 SPEAKER
1. Check that the malfunction disappears when the speaker is replaced with a normal one.
  OK:
  
  Malfunction disappears.
  
  HINT:
  - Connect all the connectors to the rear No. 2 speakers.
  - When there is a possibility that either the right or left rear speaker is defective, inspect by interchanging the right one with the left one.
  - Perform the inspection above on both LH or RH sides.
NG: REPLACE REAR NO. 2 SPEAKER

OK: Go to next step

INSPECT FRONT STEREO COMPONENT SPEAKER

Disconnect the C8 speaker connector.

Measure the resistance of the speaker.

Standard resistance

STANDARD RESISTANCE

Tester Connection	Specified Condition
1-2	1.2 to 2.2 Ω

NG: REPLACE FRONT STEREO COMPONENT SPEAKER

Fig 9: Identifying C8 Speaker Connector

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE