Inspection Procedure

CHECK HARNESS AND CONNECTOR

Disconnect the connectors shown in the illustration from the stereo component amplifier or radio receiver and speakers.

Fig 1: Identifying Stereo Component Amplifier, Radio Receiver And Speakers Connectors
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

for 7 Speakers:

Measure the resistance between each of the front No. 3 speakers and the stereo component amplifier to check for an open circuit in the wire harness.

Fig 2: Identifying Speakers Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard Resistance

RESISTANCE SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
E35-8 (FL+) - F3-1	Always	Below 1 Ω
E35-7 (FL-) - F3-2	Always	Below 1 Ω
E35-2 (FR+) - F2-1	Always	Below 1 Ω
E35-6 (FR-) - F2-2	Always	Below 1 Ω

for 6 Speakers:

Measure the resistance between each of the front No. 2 speakers and the radio receiver to check for an open circuit in the wire harness.

Standard Resistance

RESISTANCE SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
E1-2 (FL+) - I4-4 (+)	Always	Below 1 Ω
E1-6 (FL-) - I4-2 (-)	Always	Below 1 Ω
E1-1 (FR+) - H4-4 (+)	Always	Below 1 Ω
E1-5 (FR-) - H4-2 (-)	Always	Below 1 Ω

for 7 Speakers:

Measure the resistance between each of the front No. 1 speakers and the stereo component amplifier to check for an open circuit in the wire harness.

Standard Resistance

RESISTANCE SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
E36-2 (WFL+) - I1-1	Always	Below 1 Ω
E36-1 (WFL-) - I1-2	Always	Below 1 Ω
E36-9 (WFR+) - H1-1	Always	Below 1 Ω
E36-3 (WFR-) - H1-2	Always	Below 1 Ω

for 4 Speakers:

Measure the resistance between each of the front No. 1 speakers and the radio receiver to check for an open circuit in the wire harness.

Standard Resistance

RESISTANCE SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
E1-2 (FL+) - I1-1	Always	Below 1 Ω
E1-6 (FL-) - I1-2	Always	Below 1 Ω
E1-1 (FR+) - H1-1	Always	Below 1 Ω
E1-5 (FR-) - H1-2	Always	Below 1 Ω

for 7 Speakers:

Measure the resistance between each of the rear speakers and the stereo component amplifier to check for an open circuit in the wire harness.

Standard Resistance

RESISTANCE SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
E35-3 (RL+) - K2-1	Always	Below 1 Ω
E35-9 (RL-) - K2-2	Always	Below 1 Ω
E35-10 (RR+) - J2-1	Always	Below 1 Ω
E35-4 (RR-) - J2-2	Always	Below 1 Ω

Except for 7 Speakers:

Measure the resistance between each of the rear speakers and the radio receiver to check for an open circuit in the wire harness.

Standard Resistance

RESISTANCE SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
E2-2 (RL+) - K2-1	Always	Below 1 Ω
E2-6 (RL-) - K2-2	Always	Below 1 Ω
E2-1 (RR+) - J2-1	Always	Below 1 Ω
E2-3 (RR-) - J2-2	Always	Below 1 Ω

for 6 Speakers:

Measure the resistance between each of the front No. 1 speaker and front No. 2 speaker to check for an open circuit in the wire harness.

Standard Resistance

RESISTANCE SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
I4-3 (TWL+) - I1-1	Always	Below 1 Ω
14-1 (TWL-) - I1-2	Always	Below 1 Ω
H4-3 (TWR+) - H1-1	Always	Below 1 Ω
H4-1 (TWR-) - H1-2	Always	Below 1 Ω

for 7 Speakers:

Measure the resistance between each of the No. 1 woofer box speaker and the stereo component amplifier to check for an open circuit in the wire harness.

Standard Resistance

RESISTANCE SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
E36-5 (WF2+) - M1-1 (WF+)	Always	Below 1 Ω
E36-12 (WF2-) - M1-2 (WF-)	Always	Below 1 Ω
E36-10 (WF1-) - M1-3 (WF-)	Always	Below 1 Ω
E36-4 (WF1+) - M1-4 (WF+)	Always	Below 1 Ω

for 7 Speakers:

Measure the resistance between the stereo component amplifier and body ground to check for a short circuit in the wire harness.

Standard Resistance

RESISTANCE SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
E35-8 (FL+) - Body ground	Always	10 kΩ or higher
E35-7 (FL-) - Body ground	Always	10 kΩ or higher
E35-2 (FR+) - Body ground	Always	10 kΩ or higher
E35-6 (FR-) - Body ground	Always	10 kΩ or higher
E35-3 (RL+) - Body ground	Always	10 kΩ or higher
E35-9 (RL-) - Body ground	Always	10 kΩ or higher
E35-10 (RR+) - Body ground	Always	10 kΩ or higher
E35-4 (RR-) - Body ground	Always	10 kΩ or higher
E36-2 (WFL+) - Body ground	Always	10 kΩ or higher
E36-1 (WFL-) - Body ground	Always	10 kΩ or higher
E36-9 (WFR+) - Body ground	Always	10 kΩ or higher
E36-3 (WFR-) - Body ground	Always	10 kΩ or higher
E36-5 (WF2+) - Body ground	Always	10 kΩ or higher
E36-12 (WF2-) - Body ground	Always	10 kΩ or higher
E36-4 (WF1+) - Body ground	Always	10 kΩ or higher
E36-10 (WF1-) - Body ground	Always	10 kΩ or higher

Except for 7 Speakers:

Measure the resistance between each speaker or radio receiver and body ground to check for a short circuit in the wire harness.

Standard Resistance

RESISTANCE SPECIFIED CONDITION

Tester Connection

Condition

Specified Condition

E1-2 (FL+) - Body ground

Always

10 kΩ or higher

E1-6 (FL-) - Body ground

Always

10 kΩ or higher

E1-1 (FR+) - Body ground

Always

10 kΩ or higher

E1-5 (FR-) - Body ground

Always

10 kΩ or higher

E2-2 (RL+) - Body ground

Always

10 kΩ or higher

E2-6 (RL-) - Body ground

Always

10 kΩ or higher

E2-1 (RR+) - Body ground

Always

10 kΩ or higher

E2-3 (RR-) - Body ground

Always

10 kΩ or higher

I4-3 (TWL+) - Body ground⁽¹⁾

Always

10 kΩ or higher

14-1 (TWL-) - Body ground⁽¹⁾

Always

10 kΩ or higher

H4-3 (TWR+) - Body ground⁽¹⁾

Always

10 kΩ or higher

H4-1 (TWR-) - Body ground⁽¹⁾

Always

10 kΩ or higher

⁽¹⁾	for 6 Speakers

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

INSPECT FRONT NO. 1 SPEAKER

Resistance check

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

Standard Resistance:

for 7 Speakers

RESISTANCE SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
I1-1 - I1-2	Always	1.5 to 2.2 Ω
H1-1 - H1-2	Always	1.5 to 2.2 Ω

Except for 7 Speakers

RESISTANCE SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
I1-1 - I1-2	Always	3.2 to 4.8 Ω
H1-1 - H1-2	Always	3.2 to 4.8 Ω

Fig 3: Identifying Front No. 1 Speaker Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE FRONT NO. 1 SPEAKER (See REMOVAL )

OK: Go to Next Step

INSPECT REAR SPEAKER

Resistance check

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

Standard Resistance:

for 7 Speakers

RESISTANCE SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
K2-1 - K2-2	Always	2.1 to 3.1 Ω
J2-1 - J2-2	Always	2.1 to 3.1 Ω

Except for 7 Speakers

RESISTANCE SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
K2-1 - K2-2	Always	3.2 to 4.8 Ω
J2-1 - J2-2	Always	3.2 to 4.8 Ω

Fig 4: Identifying Rear Speaker Connectors

NG: REPLACE REAR SPEAKER (See REMOVAL )

OK: Go to Next Step

CONFIRM MODEL

Result

RESULT REFERENCE

Result	Proceed to
Except 7 Speakers	A
7 Speakers	B

B: Go to step 7

A: Go to Next Step

CONFIRM MODEL

Result

RESULT REFERENCE

Result	Proceed to
4 Speakers	A
6 Speakers	B

B: Go to step 6

A: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )

INSPECT FRONT NO. 2 SPEAKER
1. Check that the malfunction disappears when a known good speaker is installed.
  OK:
  
  Malfunction disappears .
  
  HINT:
  - Connect all the connectors to the front No. 2 speaker.
  - 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 above inspection on both LH and RH sides.
    NG: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )
    
    OK: REPLACE FRONT NO. 2 SPEAKER (See REMOVAL )

INSPECT NO. 1 WOOFER BOX SPEAKER

Resistance check

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

Standard Resistance

RESISTANCE SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
M1-1 (WF+) - M1-2 (WF-)	Always	0.85 to 1.50 Ω
M1-4 (WF+) - M1-3 (WF-)	Always	0.85 to 1.50 Ω

Fig 5: Identifying No. 1 Woofer Box Speaker Connector

NOTE: The speaker should not be removed when checking resistance.

NG: REPLACE NO. 1 WOOFER BOX SPEAKER (See REMOVAL )

OK: Go to Next Step

INSPECT FRONT NO. 3 SPEAKER

Resistance check

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

Standard Resistance

RESISTANCE SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
F2-1 - F2-2	Always	1.5 to 2.5 Ω
F3-1 - F3-2	Always	1.5 to 2.5 Ω

Fig 6: Identifying Front No. 3 Speaker Connector

NG: REPLACE FRONT NO. 3 SPEAKER (See REMOVAL )

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