DESCRIPTION Power is
supplied to the navigation receiver assembly and steering pad switch
assembly illumination when the light control switch is in the tail or
head position. 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 precaution for
Supplemental Restraint System.
Click here 
- Inspect the fuses for circuits related to this system before performing the following procedure.
- After turning the ignition switch off, waiting time may be required
before disconnecting the cable from the negative (-) battery terminal.
Therefore, make sure to read the disconnecting the cable from the
negative (-) battery terminal notices before proceeding with work.
PROCEDURE |
1. | CHECK METER / GAUGE SYSTEM |
(a) Check if the rheostat function operates normally. OK: The rheostat function operates normally.
| NG |
 | GO TO METER / GAUGE SYSTEM |
|
OK |
 | |
(a) Check if the instrument panel illumination comes on normally.
OK: The instrument panel illumination comes on normally.
| NG |
| GO TO LIGHTING SYSTEM |
|
OK | |
| |
(a)
Check if the illumination for the steering pad switch assembly or
navigation receiver assembly comes on when the light control switch is
turned to the head or tail position. |
Result | Proceed to | |
Illumination for steering pad switch assembly does not come on. |
A | | Illumination for navigation receiver assembly does not come on. |
B |
| B |
| GO TO STEP 7 |
|
A | |
| |
| 4. |
CHECK HARNESS AND CONNECTOR (ILLUMINATION SIGNAL) |
| (a) Disconnect the spiral cable sub-assembly connector. Click here
|
 |
|
*a | Front view of wire harness connector
(to Spiral Cable Sub-assembly) | | |
(b) Measure the voltage according to the value(s) in the table below. Standard Voltage: |
Tester Connection | Switch Condition |
Specified Condition | |
J45-12 (IL+2) - Body ground |
Light control switch in the tail or head position |
11 to 14 V |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 5. |
INSPECT STEERING PAD SWITCH ASSEMBLY | (a) Remove the steering pad switch assembly.
Click here (b) Inspect the steering pad switch assembly.
Click here
| NG |
| REPLACE STEERING PAD SWITCH ASSEMBLY |
|
OK | |
| |
| 6. |
INSPECT SPIRAL CABLE SUB-ASSEMBLY | (a) Remove the spiral cable sub-assembly.
Click here (b) Inspect the spiral cable sub-assembly.
Click here
| OK |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
| NG |
| REPLACE SPIRAL CABLE SUB-ASSEMBLY |
| 7. |
CHECK HARNESS AND CONNECTOR (ILLUMINATION SIGNAL) |
| (a) Disconnect the navigation receiver assembly connector. |
 |
|
*a | Front view of wire harness connector
(to Navigation Receiver Assembly) | | |
(b) Measure the voltage according to the value(s) in the table below. Standard Voltage: |
Tester Connection | Switch Condition |
Specified Condition | |
J133-10 (ILL+) - Body ground |
Light control switch in tail or head position |
11 to 14 V |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 8. |
CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - COMBINATION METER ASSEMBLY) |
(a) Disconnect the J134 navigation receiver assembly connector. (b) Disconnect the J28 combination meter assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
J134-5 (ILL-) - J28-22 (ILL-) |
Always | Below 1 Ω |
| OK |
| REPLACE NAVIGATION RECEIVER ASSEMBLY |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR | | 
