Toyota Tundra. Manual — part 497

2. CHECK DTC

a. Reconnect the K16 amplifier connector.

b. Check if DTC 74-40 is output.

OK: DTC 74-40 is not output.

NG: Go to step 7

OK: Go to Next Step

3. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - SPEAKERS)

a. Disonnect the K17 amplifier connector.

b. Disconnect the N10, M8, K14 and P14 speaker connectors.

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Fig. 108: Identifying N10, M8, K14 And P14 Speaker Connectors
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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

Standard resistance

HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - SPEAKERS)
TESTER CONNECTION SPECIFIED CONDITION

Tester Connection

Condition Specified Condition

K17-1(WFL-)-N10-2

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NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

4. INSPECT FRONT NO. 1 SPEAKER LH

a. Disconnect the N10 speaker connector.

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

Standard resistance

FRONT NO. 1 SPEAKER LH TESTER CONNECTION SPECIFIED CONDITION

K17-2(WFL+)-N10-1

Always

Below 1 ohms

K17-3(WFR-)-M8-2
K17-9 (WFR+)-M8-1
K17-4(CTR+)-K14-1
K17-10(CTR-)-K14-2
K17-5(WF1+)-P14-1
K17-12(WF1-)-P14-2
K17-2 (WFL+)-Body ground

Always

10 kohms or higher

K17-1(WFL-)-Body ground
K17-9(WFR+)-Body ground
K17-3 (WFR-)-Body ground
K17-5(WF1+)-Body ground
K17-12(WF1-)-Body ground
K17-4(CTR+)-Body ground
K17-10(CTR-)-Body ground

Tester Connection Condition Specified Condition

1-2

Always

1.5 to 2.1 ohms

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Fig. 109: Identifying Front No. 1 Speaker LH Connector Terminal
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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

OK: Go to Next Step

5. INSPECT FRONT NO. 1 SPEAKER RH

a. Disconnect the M8 speaker connector.

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

Standard resistance

FRONT NO. 1 SPEAKER RH

Fig. 110: Identifying Front No. 1 Speaker RH Connector Terminal
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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

OK: Go to Next Step

6. INSPECT FRONT NO. 4 SPEAKER

a. Disconnect the K14 speaker connector.

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

Standard resistance

FRONT NO. 4 SPEAKER TESTER CONNECTION SPECIFIED CONDITION

Tester Connection Condition Specified Condition

1-2

Always

1.5 to 2.1 ohms

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra