DESCRIPTION
This circuit sends an operation signal from the steering pad switch assembly to the navigation receiver assembly.
If there is an open in the circuit, the audio system cannot be operated using the steering pad switch assembly.
If there is a short in the circuit, the same condition as when a switch is continuously depressed occurs.
Therefore, the navigation receiver assembly cannot be operated using the steering pad switch assembly, and also the navigation receiver assembly itself cannot function.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
The vehicle is equipped with a Supplemental Restraint System (SRS) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the precautionary notice for the Supplemental Restraint System (See page ).
PROCEDURE
1. |
CHECK HARNESS AND CONNECTOR (STEERING PAD SWITCH SIGNAL) |
(a) Disconnect the navigation receiver assembly connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
N25-21 (SW1) - N25-23 (SWG) |
No switch is pushed |
99 to 101 kΩ |
Volume+ is pushed |
1000 to 1020 Ω |
|
Volume- is pushed |
3178 to 3242 Ω |
|
Seek+ is pushed |
Below 2.5 Ω |
|
Seek- is pushed |
327 to 333 Ω |
|
N25-22 (SW2) - N25-23 (SWG) |
No switch is pushed |
99 to 101 kΩ |
MODE switch is pushed |
Below 2.5 Ω |
|
On Hook switch is pushed |
327 to 333 Ω |
|
Off Hook switch is pushed |
1000 to 1020 Ω |
|
Voice switch is pushed |
3178 to 3242 Ω |
*a |
Front view of wire harness connector (to Navigation Receiver Assembly) |
OK |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
2. |
INSPECT STEERING PAD SWITCH ASSEMBLY |
(a) Remove the steering pad switch assembly (See page ).
(b) Inspect the steering pad switch assembly (See page ).
NG |
REPLACE STEERING PAD SWITCH ASSEMBLY |
|
3. |
INSPECT SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY |
(a) Remove the spiral cable with sensor sub-assembly (See page ).
(b) Inspect the spiral cable with sensor sub-assembly (See page ).
OK |
REPAIR OR REPLACE HARNESS OR CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY) |
NG |
REPLACE SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY |
System Description
SYSTEM DESCRIPTION
1. SYSTEM DESCRIPTION
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DESCRIPTION
The No. 1 ATF temperature sensor converts the fluid temperature into a resistance
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The ECM applies a voltage to the temperature sensor through terminal THO1 of
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The sensor resistance changes with the ATF temperature. As the temperature becomes
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Tachometer Malfunction
DESCRIPTION
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WIRING DIAGRAM
PROCEDURE
1.
CHECK CAN CO ...