DESCRIPTION
WIRING DIAGRAM
PROCEDURE
1. |
CHECK SPEAKER (OPERATION CHECK) |
(a) Enter the "System Check Mode" screen. Refer to Check Speaker in Operation
Check (See page |
|
(b) Perform the operation check above and determine the speaker that is not operating.
Result |
Proceed to |
---|---|
Front No. 1 speaker assembly or front No. 2 speaker assembly |
A |
Rear speaker assembly |
B |
HINT:
If sound cannot be heard from any speaker, inspect all of them.
B | ![]() |
GO TO STEP 7 |
|
2. |
CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - FRONT NO. 2 SPEAKER ASSEMBLY) |
(a) Disconnect the E4 radio and display receiver assembly connector.
(b) Disconnect the E28 and E29 front No. 2 speaker assembly connectors.
(c) Measure the resistance between each of the front No. 2 speaker assemblies and the radio and display receiver assembly to check for an open circuit in the wire harness.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
E4-1 (FR+) - E28-2 (TWR+) |
Always |
Below 1 Ω |
E4-5 (FR-) - E28-4 (TWR-) |
Always |
Below 1 Ω |
E4-2 (FL+) - E29-2 (TWL+) |
Always |
Below 1 Ω |
E4-6 (FL-) - E29-4 (TWL-) |
Always |
Below 1 Ω |
(d) Measure the resistance between the radio and display receiver assembly and body ground to check for a short circuit in the wire harness.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
E4-1 (FR+) - Body ground |
Always |
10 kΩ or higher |
E4-5 (FR-) - Body ground |
Always |
10 kΩ or higher |
E4-2 (FL+) - Body ground |
Always |
10 kΩ or higher |
E4-6 (FL-) - Body ground |
Always |
10 kΩ or higher |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. |
CHECK HARNESS AND CONNECTOR (FRONT NO. 1 SPEAKER ASSEMBLY - FRONT NO. 2 SPEAKER ASSEMBLY) |
(a) Disconnect the E28 and E29 front No. 2 speaker assembly connectors.
(b) Disconnect the H1 and I1 front No. 1 speaker assembly connectors.
(c) Measure the resistance between each of the front No. 1 speaker assemblies and the front No. 2 speaker assemblies to check for an open circuit in the wire harness.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
E28-1 (+) - H1-1 |
Always |
Below 1 Ω |
E28-3 (-) - H1-2 |
Always |
Below 1 Ω |
E29-1 (+) - I1-1 |
Always |
Below 1 Ω |
E29-3 (-) - I1-2 |
Always |
Below 1 Ω |
(d) Measure the resistance between each of the front No. 2 speaker assemblies and body ground to check for a short circuit in the wire harness.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
E28-1 (+) - Body ground |
Always |
10 kΩ or higher |
E28-3 (-) - Body ground |
Always |
10 kΩ or higher |
E29-1 (+) - Body ground |
Always |
10 kΩ or higher |
E29-3 (-) - Body ground |
Always |
10 kΩ or higher |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
4. |
INSPECT FRONT NO. 2 SPEAKER ASSEMBLY |
(a) Remove the front No. 2 speaker assembly (See Page
).
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
NG | ![]() |
REPLACE FRONT NO. 2 SPEAKER ASSEMBLY |
|
5. |
REPLACE FRONT NO. 2 SPEAKER ASSEMBLY |
(a) Check that the malfunction disappears when a new or known good speaker is
installed (See page ).
OK:
Malfunction disappears.
HINT:
OK | ![]() |
END (FRONT NO. 2 SPEAKER ASSEMBLY WAS DEFECTIVE) |
|
6. |
INSPECT FRONT NO. 1 SPEAKER ASSEMBLY |
(a) Remove the front No. 1 speaker assembly (See page
).
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
OK | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
NG | ![]() |
REPLACE FRONT NO. 1 SPEAKER ASSEMBLY |
7. |
CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVERASSEMBLY - REAR SPEAKER ASSEMBLY) |
(a) Disconnect the E5 radio and display receiver assembly connector.
(b) Disconnect the J4 and K4 rear speaker assembly connectors.
(c) Measure the resistance between each of the rear speaker assemblies and the radio and display receiver assembly to check for an open circuit in the wire harness.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
E5-1 (RR+) - J4-1 |
Always |
Below 1 Ω |
E5-3 (RR-) - J4-2 |
Always |
Below 1 Ω |
E5-2 (RL+) - K4-1 |
Always |
Below 1 Ω |
E5-6 (RL-) - K4-2 |
Always |
Below 1 Ω |
(d) Measure the resistance between the radio and display receiver assembly and body ground to check for a short circuit in the wire harness.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
E5-1 (RR+) - Body ground |
Always |
10 kΩ or higher |
E5-3 (RR-) - Body ground |
Always |
10 kΩ or higher |
E5-2 (RL+) - Body ground |
Always |
10 kΩ or higher |
E5-6 (RL-) - Body ground |
Always |
10 kΩ or higher |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
8. |
INSPECT REAR SPEAKER ASSEMBLY |
(a) Remove the rear speaker assembly (See Page
).
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
OK | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
NG | ![]() |
REPLACE REAR SPEAKER ASSEMBLY |
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use these procedure to troubleshoot the seat belt warning system.
*: Use the Techstream.
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
NEXT
...
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
If a trouble code is displayed during the DTC check, check the circuit listed
for the code in the table below (proceed to the page listed for that circuit).
HINT:
When DTC B1650/32 is detected as a result of troubleshooting f ...
Certification Ecu
Components
COMPONENTS
ILLUSTRATION
Removal
REMOVAL
PROCEDURE
1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-)
battery terminal to disable the SRS system.
N ...