Navigation System (for CrewMax)

NAVIGATION: NAVIGATION SYSTEM (for CrewMax): 74-40: Short in Speaker Circuit

DTC 74-40 - Short in Speaker Circuit

DESCRIPTION





WIRING DIAGRAM









INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC
(a) Disconnect the K16 and K17 amplifier connectors.
(b) Clear the DTC.
(c) Check if DTC 74-40 is output.
OK:
DTC 74-40 is not output.
NG -- REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY
OK -- Continue to next step.
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 -- CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - SPEAKERS)
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - SPEAKERS)
(a) Disconnect the K17 amplifier connector.




(b) Disconnect the N10, M8, K14 and P14 speaker connectors.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue 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:






NG -- REPLACE FRONT NO. 1 SPEAKER LH
OK -- Continue 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:






NG -- REPLACE FRONT NO. 1 SPEAKER RH
OK -- Continue 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:






NG -- REPLACE FRONT NO. 4 SPEAKER
OK -- REPLACE BOX SPEAKER
7. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - SPEAKERS)




(a) Disconnect the K16 amplifier connector.
(b) Disconnect the K10, K12, N1, M1, O1, O2, O7 and O8 speaker connectors.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
8. INSPECT FRONT NO. 3 SPEAKER LH




(a) Disconnect the N1 speaker connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPLACE FRONT NO. 3 SPEAKER LH
OK -- Continue to next step.
9. INSPECT FRONT NO. 3 SPEAKER RH




(a) Disconnect the M1 speaker connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPLACE FRONT NO. 3 SPEAKER RH
OK -- Continue to next step.
10. INSPECT FRONT NO. 2 SPEAKER LH




(a) Disconnect the K12 speaker connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPLACE FRONT NO. 2 SPEAKER LH
OK -- Continue to next step.
11. INSPECT FRONT NO. 2 SPEAKER RH




(a) Disconnect the K10 speaker connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPLACE FRONT NO. 2 SPEAKER RH
OK -- Continue to next step.
12. INSPECT REAR NO. 2 SPEAKER LH
(a) Disconnect the O8 speaker connector.




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






NG -- REPLACE REAR NO. 2 SPEAKER LH
OK -- Continue to next step.
13. INSPECT REAR NO. 2 SPEAKER RH
(a) Disconnect the O2 speaker connector.




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






NG -- REPLACE REAR NO. 2 SPEAKER RH
OK -- Continue to next step.
14. INSPECT REAR NO. 1 SPEAKER LH




(a) Disconnect the O7 speaker connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPLACE REAR NO. 1 SPEAKER LH
OK -- REPLACE REAR NO. 1 SPEAKER RH