The main body ECU (multiplex network body ECU) controls the operation of the following lights:
Footwell Light LH (No. 1 Interior Illumination Light Assembly)*
Footwell Light RH (No. 2 Interior Illumination Light Assembly)*
Glove Box Light Assembly*
Center Tray Illumination Light (No. 3 Interior Illumination Light Assembly)
Console Box Illumination Light (Console Box Illumination Light Assembly)*
Inside Handle Illumination Light RH (No. 1 Interior Illumination Light Assembly RH)*
Inside Handle Illumination Light LH (No. 1 Interior Illumination Light Assembly LH)*
*: 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.
| Result | Proceed to |
|---|---|
| w/o Footwell Light | A |
| w/ Footwell Light | B |
A
B
Perform the Active Test according to the display on the GTS.
| Tester Display | Measurement Item | Control Range | Diagnostic Note |
|---|---|---|---|
| Front Footwell Lights | Center Tray Illumination Light (No. 3 Interior Illumination Light Assembly) | OFF or ON | Operates when ignition switch is off and all doors are locked. |
| Tester Display |
|---|
| Front Footwell Lights |
Center tray illumination light comes on.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the 4F power distribution box assembly connector.
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 4F-1 - Body ground | Ignition switch off | 11 to 14 V |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(Power Distribution Box Assembly) |
- | - |
Disconnect the 4B power distribution box assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 4F-1 - 4B-28 | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the 4C power distribution box assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
|
Click Location & Routing(E81)Location & Routingewd_type=routing;type=c;code=E81 |
||
| E81-2 (B) - 4B-28 | Always | Below 1 Ω |
| E81-1 (E) - 4C-19 | Always | Below 1 Ω |
| E81-2 (B) or 4B-28 - Body ground | Always | 10 kΩ or higher |
| E81-1 (E) or 4C-19 - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(Power Distribution Box Assembly) |
- | - |
Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 4C-19 - MB-16 (FSPT) | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Perform the Active Test according to the display on the GTS.
| Tester Display | Measurement Item | Control Range | Diagnostic Note |
|---|---|---|---|
| Front Footwell Lights | ·
Footwell Light (Interior Illumination Light Assembly) ·
Glove Box Light Assembly ·
Center Tray Illumination Light (No. 3 Interior Illumination Light Assembly) ·
Console Box Illumination Light (Console Box Illumination Light Assembly) ·
Inside Handle Illumination Light (No. 1 Interior Illumination Light Assembly) |
OFF or ON | Operates when ignition switch is off and all doors are locked. |
| Tester Display |
|---|
| Front Footwell Lights |
Footwell lights, glove box light assembly, center tray illumination light, console box illumination light and inside handle illumination lights come on.
| Result | Proceed to |
|---|---|
| OK | A |
| NG (Footwell light LH does not come on) | B |
| NG (Footwell light RH does not come on) | C |
| NG (Glove box light assembly does not come on) | D |
| NG (Center tray illumination light does not come on) | E |
| NG (Console box illumination light does not come on) | F |
| NG (Inside handle illumination light LH does not come on) | G |
| NG (Inside handle illumination light RH does not come on) | H |
| NG (Footwell lights, glove box light assembly, center tray illumination light, console box illumination light and inside handle illumination lights do not come on) | I |
A
B
C
D
E
F
G
H
I
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the 4B and 4C power distribution box assembly connectors.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
|
Click Location & Routing(E71)Location & Routingewd_type=routing;type=c;code=E71 Click Connector(E71)Instrument Panel>Instrument Panel Wire / Radio Wiring Sub-Assy / Telephone Computer Wire>No. 2 Interior Illumination Light Assembly LHewd_type=component;type=c;code=E71;pinno=2,1 |
||
| E71-2 (B) - 4B-28 | Always | Below 1 Ω |
| E71-1 (L) - 4C-19 | Always | Below 1 Ω |
| E71-2 (B) or 4B-28 - Body ground | Always | 10 kΩ or higher |
| E71-1 (L) or 4C-19 - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(Power Distribution Box Assembly) |
- | - |
Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 4C-19 - MB-16 (FSPT) | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the 4B and 4C power distribution box assembly connectors.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
|
Click Location & Routing(E72)Location & Routingewd_type=routing;type=c;code=E72 Click Connector(E72)Instrument Panel>Instrument Panel Wire / Radio Wiring Sub-Assy / Telephone Computer Wire>No. 2 Interior Illumination Light Assembly RHewd_type=component;type=c;code=E72;pinno=2,1 |
||
| E72-2 (B) - 4B-28 | Always | Below 1 Ω |
| E72-1 (L) - 4C-18 | Always | Below 1 Ω |
| E72-2 (B) or 4B-28 - Body ground | Always | 10 kΩ or higher |
| E72-1 (L) or 4C-18 - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(Power Distribution Box Assembly) |
- | - |
Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 4C-18 - MB-16 (FSPT) | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the 4B and 4C power distribution box assembly connectors.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
|
Click Location & Routing(E76)Location & Routingewd_type=routing;type=c;code=E76 Click Connector(E76)Instrument Panel>Instrument Panel Wire / Radio Wiring Sub-Assy / Telephone Computer Wire>Glove Box Light Assemblyewd_type=component;type=c;code=E76;pinno=4,2 |
||
| E76-4 (B) - 4B-28 | Always | Below 1 Ω |
| E76-2 (E) - 4C-18 | Always | Below 1 Ω |
| E76-4 (B) or 4B-28 - Body ground | Always | 10 kΩ or higher |
| E76-2 (E) or 4C-18 - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(Power Distribution Box Assembly) |
- | - |
Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 4C-18 - MB-16 (FSPT) | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the 4B and 4C power distribution box assembly connectors.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
|
Click Location & Routing(E81)Location & Routingewd_type=routing;type=c;code=E81 |
||
| E81-2 (B) - 4B-28 | Always | Below 1 Ω |
| E81-1 (E) - 4C-19 | Always | Below 1 Ω |
| E81-2 (B) or 4B-28 - Body ground | Always | 10 kΩ or higher |
| E81-1 (E) or 4C-19 - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(Power Distribution Box Assembly) |
- | - |
Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 4C-19 - MB-16 (FSPT) | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the 4B and 4C power distribution box assembly connectors.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
|
Click Location & Routing(L24)Location & Routingewd_type=routing;type=c;code=L24 Click Connector(L24)Instrument Panel>No. 2 Floor Wire>Console Box Illumination Light Assemblyewd_type=component;type=c;code=L24;pinno=4,5,1,2 |
||
| L24-4 (IG) - 4B-28 | Always | Below 1 Ω |
| L24-5 (IG) - 4B-28 | Always | Below 1 Ω |
| L24-1 (GND) - 4C-19 | Always | Below 1 Ω |
| L24-2 (GND) - 4C-18 | Always | Below 1 Ω |
| L24-4 (IG) or 4B-28 - Body ground | Always | 10 kΩ or higher |
| L24-5 (IG) or 4B-28 - Body ground | Always | 10 kΩ or higher |
| L24-1 (GND) or 4C-19 - Body ground | Always | 10 kΩ or higher |
| L24-2 (GND) or 4C-18 - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(Power Distribution Box Assembly) |
- | - |
Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 4C-18 - MB-16 (FSPT) | Always | Below 1 Ω |
| 4C-19 - MB-16 (FSPT) | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the 4B and 4C power distribution box assembly connectors.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
|
Click Location & Routing(I11)Location & Routingewd_type=routing;type=c;code=I11 Click Connector(I11)Body>No. 2 Front Door Wire RH / No. 2 Front Door Wire LH>No. 1 Interior Illumination Light Assembly LHewd_type=component;type=c;code=I11;pinno=2,1 |
||
| I11-2 (+) - 4B-28 | Always | Below 1 Ω |
| I11-1 (-) - 4C-18 | Always | Below 1 Ω |
| I11-2 (+) or 4B-28 - Body ground | Always | 10 kΩ or higher |
| I11-1 (-) or 4C-18 - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(Power Distribution Box Assembly) |
- | - |
Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 4C-18 - MB-16 (FSPT) | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the 4B and 4C power distribution box assembly connectors.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
|
Click Location & Routing(I10)Location & Routingewd_type=routing;type=c;code=I10 Click Connector(I10)Body>No. 2 Front Door Wire RH / No. 2 Front Door Wire LH>No. 1 Interior Illumination Light Assembly RHewd_type=component;type=c;code=I10;pinno=2,1 |
||
| I10-2 (+) - 4B-28 | Always | Below 1 Ω |
| I10-1 (-) - 4C-18 | Always | Below 1 Ω |
| I10-2 (+) or 4B-28 - Body ground | Always | 10 kΩ or higher |
| I10-1 (-) or 4C-18 - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(Power Distribution Box Assembly) |
- | - |
Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 4C-18 - MB-16 (FSPT) | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the 4F power distribution box assembly connector.
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 4F-1 - Body ground | Ignition switch off | 11 to 14 V |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(Power Distribution Box Assembly) |
- | - |
Disconnect the 4B power distribution box assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 4F-1 - 4B-28 | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the E71 footwell light LH (No. 1 interior illumination light assembly) connector.
Disconnect the E72 footwell light RH (No. 2 interior illumination light assembly) connector.
Disconnect the E76 glove box light assembly connector.
Disconnect the E81 center tray illumination light (No. 3 interior illumination light assembly) connector.
Disconnect the L24 console box illumination light (console box illumination light assembly) connector.
Disconnect the I11 inside handle illumination light LH (No. 1 interior illumination light assembly LH) connector.
Disconnect the I10 inside handle illumination light RH (No. 1 interior illumination light assembly RH) connector.
Measure the resistance according to the value(s) in the table below.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the 4C power distribution box assembly connector.
Measure the resistance according to the value(s) in the table below.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(Power Distribution Box Assembly) |
- | - |
Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 4C-18 - MB-16 (FSPT) | Always | Below 1 Ω |
| 4C-19 - MB-16 (FSPT) | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG