The main body ECU (multiplex network body ECU) controls the operation of the following lights:
Center Tray Illumination Light (Instrument Panel Light Assembly)*1
Cup Holder Light (Console Box Pocket Garnish)*2
Footwell Light LH (No. 1 Interior Illumination Light Assembly)*3
Footwell Light RH (No. 1 Interior Illumination Light Assembly)*3
*1: w/ Center Tray Light
*2: w/ Cup Holder Light
*3: w/ Footwell Light
Inspect the fuses for circuits related to this system before performing the following procedure.
Before replacing the main body ECU (multiplex network body ECU), refer to Service Bulletin.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Body Electrical / Main Body / Active Test.
Perform the Active Test according to the display on the GTS.
| Tester Display | Measurement Item | Control Range | Diagnostic Note |
|---|---|---|---|
| Fr Foot Light | ·
Center tray illumination light (instrument panel light assembly)*1 ·
Cup holder light (console box pocket garnish)*2 ·
Footwell light (No. 1 interior illumination light assembly)*3 |
OFF or ON | Preconditions for using the Active Test to check dimmer controlled illumination:
·
Ignition switch ON ·
Shift lever is in any position other than P |
*1: w/ Center Tray Light
*2: w/ Cup Holder Light
*3: w/ Footwell Light
| Tester Display |
|---|
| Fr Foot Light |
| Result | Proceed to |
|---|---|
| OK | A |
| NG (Center tray illumination light does not come on) | B |
| NG (Cup holder light does not come on) | C |
| NG (Footwell light LH does not come on) | D |
| NG (Footwell light RH does not come on) | E |
| NG (Center tray illumination light, cup holder light and footwell lights do not come on) | F |
A
B
C
D
E
F
Remove the center tray illumination light (instrument panel light assembly).
Inspect the center tray illumination light (instrument panel light assembly).
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the 4E and 4F driver side junction block assembly connectors.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I29-2 (B) - 4F-25 | Always | Below 1 Ω |
| I29-1 (E) - 4E-37 | Always | Below 1 Ω |
| I29-2 (B) or 4F-25 - Body ground | Always | 10 kΩ or higher |
| I29-1 (E) or 4E-37 - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(Driver Side Junction Block Assembly) |
- | - |
Disconnect the 4D driver side junction block assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 4D-1 - 4F-25 | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(Driver Side Junction Block Assembly) |
- | - |
Remove the main body ECU (multiplex network body ECU) from the driver side junction block assembly.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 4E-37 -MB-26 (FSPT) | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the cup holder light (console box pocket garnish).
Inspect the cup holder light (console box pocket garnish).
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the 4E and 4F driver side junction block assembly connectors.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I30-2 (B) - 4F-26 | Always | Below 1 Ω |
| I30-1 (E) - 4E-36 | Always | Below 1 Ω |
| I30-2 (B) or 4F-26 - Body ground | Always | 10 kΩ or higher |
| I30-1 (E) or 4E-36 - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(Driver Side Junction Block Assembly) |
- | - |
Disconnect the 4D driver side junction block assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 4D-1 - 4F-26 | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(Driver Side Junction Block Assembly) |
- | - |
Remove the main body ECU (multiplex network body ECU) from the driver side junction block assembly.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 4E-36 -MB-26 (FSPT) | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the footwell light LH (No. 1 interior illumination light assembly).
Inspect the footwell light LH (No. 1 interior illumination light assembly).
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the 4E and 4F driver side junction block assembly connectors.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I175-2 (B) - 4F-27 | Always | Below 1 Ω |
| I175-1 (L) - 4E-37 | Always | Below 1 Ω |
| I175-2 (B) or 4F-27 - Body ground | Always | 10 kΩ or higher |
| I175-1 (L) or 4E-37 - Body ground | Always | 10 kΩ or higher |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I175-2 (B) - 4F-24 | Always | Below 1 Ω |
| I175-1 (L) - 4E-37 | Always | Below 1 Ω |
| I175-2 (B) or 4F-24 - Body ground | Always | 10 kΩ or higher |
| I175-1 (L) or 4E-37 - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(Driver Side Junction Block Assembly) |
- | - |
Disconnect the 4D driver side junction block assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 4D-1 - 4F-27 | Always | Below 1 Ω |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 4D-1 - 4F-24 | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(Driver Side Junction Block Assembly) |
- | - |
Remove the main body ECU (multiplex network body ECU) from the driver side junction block assembly.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 4E-37 -MB-26 (FSPT) | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the footwell light RH (No. 1 interior illumination light assembly).
Inspect the footwell light RH (No. 1 interior illumination light assembly).
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the 4E and 4F driver side junction block assembly connectors.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I174-2 (B) - 4F-24 | Always | Below 1 Ω |
| I174-1 (L) - 4E-37 | Always | Below 1 Ω |
| I174-2 (B) or 4F-24 - Body ground | Always | 10 kΩ or higher |
| I174-1 (L) or 4E-37 - Body ground | Always | 10 kΩ or higher |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I174-2 (B) - 4F-27 | Always | Below 1 Ω |
| I174-1 (L) - 4E-37 | Always | Below 1 Ω |
| I174-2 (B) or 4F-27 - Body ground | Always | 10 kΩ or higher |
| I174-1 (L) or 4E-37 - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(Driver Side Junction Block Assembly) |
- | - |
Disconnect the 4D driver side junction block assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 4D-1 - 4F-24 | Always | Below 1 Ω |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 4D-1 - 4F-27 | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(Driver Side Junction Block Assembly) |
- | - |
Remove the main body ECU (multiplex network body ECU) from the driver side junction block assembly.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 4E-37 -MB-26 (FSPT) | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the 4D driver side junction block assembly connector.
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 4D-1 - Body ground | Power switch off | 11 to 14 V |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(Driver Side Junction Block Assembly) |
- | - |
Disconnect the 4F driver side junction block assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 4D-1 - 4F-24 | Always | Below 1 Ω |
| 4D-1 - 4F-25 | Always | Below 1 Ω |
| 4D-1 - 4F-26 | Always | Below 1 Ω |
| 4D-1 - 4F-27 | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(Driver Side Junction Block Assembly) |
- | - |
Remove the main body ECU (multiplex network body ECU) from the driver side junction block assembly.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 4E-36 -MB-26 (FSPT) | Always | Below 1 Ω |
| 4E-37 -MB-26 (FSPT) | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG