| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B150718 | Turn Signal Light Circuit Current Below Threshold | Diagnosis Condition:
Battery voltage is 10 V or more Malfunction Status:
·
Open in front turn signal light circuit ·
Open in side turn signal light circuit ·
Open in rear turn signal light circuit |
w/ Headlight ECU:
·
Front turn signal light socket ·
Headlight unit assembly ·
Headlight ECU sub-assembly ·
Side turn signal light assembly ·
Outer rear View mirror assembly (w/ Panoramic View Monitor System) ·
Outer mirror retractor (w/o Panoramic View Monitor System) ·
Rear combination light socket and wire sub-assembly ·
Combination meter assembly ·
Harness or connector w/o Headlight ECU, for TAW Made:
·
Headlight assembly ·
w/ Front Fender Type Side Turn Signal Light: Side turn signal light socket and wire ·
w/ Outer Rear View Mirror Type Side Turn Signal Light: Side turn signal light assembly Outer rear view mirror assembly (Outer mirror retractor) ·
Rear combination light assembly ·
Combination meter assembly ·
Harness or connector w/o Headlight ECU, except TAW Made:
·
Front turn signal light socket ·
w/ Front Fender Type Side Turn Signal Light: Side turn signal light socket and wire ·
w/ Outer Rear View Mirror Type Side Turn Signal Light: Side turn signal light assembly Outer rear view mirror assembly (Outer mirror retractor) ·
Rear combination light socket and wire sub-assembly ·
Combination meter assembly ·
Harness or connector |
w/ Headlight ECU:
w/o Headlight ECU, for TAW Made:
w/o Headlight ECU, except TAW Made:
When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
When replacing the headlight ECU sub-assembly LH, always replace it with a new one. If a headlight ECU sub-assembly LH which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
Inspect the bulbs before performing the following procedure.
Check vehicle condition.
| Result | Proceed to |
|---|---|
| w/o Headlight ECU | A |
| w/ Headlight ECU | B |
A
B
Inspect the illumination of each turn signal light.
| Result | Proceed to |
|---|---|
| Front turn signal light LH and side turn signal light LH do not blink. | A |
| Front turn signal light RH and side turn signal light RH do not blink. | B |
| Front turn signal light LH does not blink. | C |
| Side turn signal light LH does not blink. | D |
| Front turn signal light RH does not blink. | E |
| Side turn signal light RH does not blink. | F |
| Rear turn signal light LH does not blink. | G |
| Rear turn signal light RH does not blink. | H |
A
B
C
D
E
F
G
H
Check vehicle condition.
| Result | Proceed to |
|---|---|
| for TAW Made | A |
| except TAW Made | B |
A
B
Disconnect the N23 combination meter assembly connector.
Disconnect the A19 headlight assembly LH connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A19-2 (B) - N23-1 (LL) | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the N23 combination meter assembly connector.
Disconnect the A19 front turn signal light socket connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N23-1 (LL) - A19-2 (B) | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Check vehicle condition.
| Result | Proceed to |
|---|---|
| for TAW Made | A |
| except TAW Made | B |
A
B
Disconnect the N23 combination meter assembly connector.
Disconnect the A20 headlight assembly RH connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A20-2 (B) - N23-2 (LR) | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the N23 combination meter assembly connector.
Disconnect the A20 front turn signal light socket connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N23-2 (LR) - A20-2 (B) | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Check vehicle condition.
| Result | Proceed to |
|---|---|
| for TAW Made | A |
| except TAW Made | B |
A
B
Disconnect the A19 headlight assembly LH connector.
Disconnect the N23 combination meter assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A19-2 (B) - N23-1 (LL) | Always | Below 1 Ω |
| A19-1 (E) - Body ground | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the A19 front turn signal light socket connector.
Disconnect the N23 combination meter assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A19-2 (B) - N23-1 (LL) | Always | Below 1 Ω |
| A19-1 (E) - Body ground | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Check vehicle condition.
| Result | Proceed to |
|---|---|
| w/ Front Fender Type Side Turn Signal Light | A |
| w/ Outer Rear View Mirror Type Side Turn Signal Light | B |
A
B
Disconnect the A21 side turn signal light socket and wire LH connector.
Disconnect the N23 combination meter assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N23-1 (LL) - A21-1 (B) | Always | Below 1 Ω |
| A21-2 (E) - Body ground | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the outer rear view mirror assembly LH (outer mirror retractor LH).
Inspect the outer rear view mirror assembly LH (outer mirror retractor LH).
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the side turn signal light assembly LH.
Inspect the side turn signal light assembly LH.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Check vehicle condition.
| Result | Proceed to |
|---|---|
| for TAW Made | A |
| except TAW Made | B |
A
B
Disconnect the A20 headlight assembly RH connector.
Disconnect the N23 combination meter assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A20-2 (B) - N23-2 (LR) | Always | Below 1 Ω |
| A20-1 (E) - body ground | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the A20 front turn signal light socket connector.
Disconnect the N23 combination meter assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A20-2 (B) - N23-2 (LR) | Always | Below 1 Ω |
| A20-1 (E) - body ground | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Check vehicle condition.
| Result | Proceed to |
|---|---|
| w/ Front Fender Type Side Turn Signal Light | A |
| w/ Outer Rear View Mirror Type Side Turn Signal Light | B |
A
B
Disconnect the A22 side turn signal light socket and wire RH connector.
Disconnect the N23 combination meter assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N23-2 (LR) - A22-1 (B) | Always | Below 1 Ω |
| A22-1 (E) - Body ground | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the outer rear view mirror assembly RH (outer mirror retractor RH).
Inspect the outer rear view mirror assembly RH (outer mirror retractor RH).
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the side turn signal light assembly RH.
Inspect the side turn signal light assembly RH.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Check vehicle condition.
| Result | Proceed to |
|---|---|
| for TAW Made | A |
| except TAW Made | B |
A
B
Disconnect the e1 rear combination light assembly LH connector.
Disconnect the N23 combination meter assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| e1-4 (TRN) - N23-5 (TRNL) | Always | Below 1 Ω |
| e1-6 (E) - Body ground | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(Rear Combination Light Assembly LH) |
Disconnect the rear combination light assembly LH connector.
Apply battery voltage to the rear combination light assembly LH and check that the light illuminates.
| Condition | Specified Condition |
|---|---|
| Battery positive (+) → Terminal 4 (TRN)
Battery negative (-) → Terminal 6 (E) |
Turn signal light illuminates |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the e1 rear combination light socket and wire sub-assembly LH connector.
Disconnect the N23 combination meter assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| e1-4 (TRN) - N23-5 (TRNL) | Always | Below 1 Ω |
| e1-6 (E) - Body ground | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(Rear Combination Light Socket and Wire Sub-assembly LH) |
Disconnect the rear combination light socket and wire sub-assembly LH connector.
Apply battery voltage to the rear combination light socket and wire sub-assembly LH and check that the light illuminates.
| Condition | Specified Condition |
|---|---|
| Battery positive (+) → Terminal 4 (TRN)
Battery negative (-) → Terminal 6 (E) |
Turn signal light illuminates |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Check vehicle condition.
| Result | Proceed to |
|---|---|
| for TAW Made | A |
| except TAW Made | B |
A
B
Disconnect the g1 rear combination light assembly RH connector.
Disconnect the N23 combination meter assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| g1-4 (TRN) - N23-6 (TRNR) | Always | Below 1 Ω |
| g1-6 (E) - Body ground | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(Rear Combination Light Assembly RH) |
Disconnect the rear combination light assembly RH connector.
Apply battery voltage to the rear combination light assembly RH and check that the light illuminates.
| Condition | Specified Condition |
|---|---|
| Battery positive (+) → Terminal 4 (TRN)
Battery negative (-) → Terminal 6 (E) |
Turn signal light illuminates |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the g1 rear combination light socket and wire sub-assembly RH connector.
Disconnect the N23 combination meter assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| g1-4 (TRN) - N23-6 (TRNR) | Always | Below 1 Ω |
| g1-6 (E) - Body ground | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(Rear Combination Light Socket and Wire Sub-assembly RH) |
Disconnect the rear combination light socket and wire sub-assembly RH connector.
Apply battery voltage to the rear combination light socket and wire sub-assembly RH and check that the light illuminates.
| Condition | Specified Condition |
|---|---|
| Battery positive (+) → Terminal 4 (TRN)
Battery negative (-) → Terminal 6 (E) |
Turn signal light illuminates |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Inspect the illumination of each turn signal light.
| Result | Proceed to |
|---|---|
| Front turn signal light LH and side turn signal light LH do not blink. | A |
| Front turn signal light RH and side turn signal light RH do not blink. | B |
| Front turn signal light LH does not blink. | C |
| Side turn signal light LH does not blink. | D |
| Front turn signal light RH does not blink. | E |
| Side turn signal light RH does not blink. | F |
| Rear turn signal light LH does not blink. | G |
| Rear turn signal light RH does not blink. | H |
A
B
C
D
E
F
G
H
Disconnect the N23 combination meter assembly connector.
Disconnect the A54 Headlight ECU Sub-assembly LH connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N23-1 (LL) - A54-11 (TNS) | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the N23 combination meter assembly connector.
Disconnect the A55 Headlight ECU Sub-assembly RH connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N23-2 (LR) - A55-11 (TNS) | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the N23 combination meter assembly connector.
Disconnect the A54 Headlight ECU Sub-assembly LH connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N23-1 (LL) - A54-11 (TNS) | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(to Headlight ECU Sub-assembly LH) |
| *b | Component without harness connected
(to Front Turn Signal Light Socket LH) |
Remove the headlight unit assembly LH.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| B-20 - C-1 | Always | Below 1 Ω |
| B-13 - C-2 | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(to Headlight ECU Sub-assembly LH) |
Remove the headlight ECU sub-assembly LH.
Apply battery voltage to the headlight unit assembly LH and check that the light illuminates.
| Condition | Specified Condition |
|---|---|
| Battery positive (+) → B-20
Battery negative (-) → B-13 |
Turn signal light illuminates |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Check vehicle condition.
| Result | Proceed to |
|---|---|
| w/ Panoramic View Monitor System | A |
| w/o Panoramic View Monitor System | B |
A
B
Remove the outer rear view mirror assembly LH.
Inspect the outer rear view mirror assembly LH.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the side turn signal light assembly LH.
Inspect the side turn signal light assembly LH.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the outer rear view mirror assembly LH.
Inspect the outer rear view mirror assembly LH.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the side turn signal light assembly LH.
Inspect the side turn signal light assembly LH.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the N23 combination meter assembly connector.
Disconnect the A55 Headlight ECU Sub-assembly RH connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N23-2 (LR) - A55-11 (TNS) | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(to Headlight ECU Sub-assembly RH) |
| *b | Component without harness connected
(to Front Turn Signal Light Socket RH) |
Remove the headlight unit assembly RH.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| B-20 - C-1 | Always | Below 1 Ω |
| B-13 - C-2 | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(to Headlight ECU Sub-assembly RH) |
Remove the headlight ECU sub-assembly RH.
Apply battery voltage to the headlight unit assembly RH and check that the light illuminates.
| Condition | Specified Condition |
|---|---|
| Battery positive (+) → B-20
Battery negative (-) → B-13 |
Turn signal light illuminates |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Check vehicle condition.
| Result | Proceed to |
|---|---|
| w/ Panoramic View Monitor System | A |
| w/o Panoramic View Monitor System | B |
A
B
Remove the outer rear view mirror assembly RH.
Inspect the outer rear view mirror assembly RH.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the side turn signal light assembly RH.
Inspect the side turn signal light assembly RH.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the outer rear view mirror assembly RH.
Inspect the outer rear view mirror assembly RH.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the side turn signal light assembly RH.
Inspect the side turn signal light assembly RH.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the e4 rear combination light socket and wire sub-assembly LH connector.
Disconnect the N23 combination meter assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| e4-3 (TRN) - N23-5 (TRNL) | Always | Below 1 Ω |
| e4-4 (E) - Body ground | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(Rear Combination Light Socket and Wire Sub-assembly LH) |
Disconnect the rear combination light socket and wire sub-assembly LH connector.
Apply battery voltage to the rear combination light socket and wire sub-assembly LH and check that the light illuminates.
| Condition | Specified Condition |
|---|---|
| Battery positive (+) → Terminal 3 (TRN)
Battery negative (-) → Terminal 4 (E) |
Turn signal light illuminates |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the g2 rear combination light socket and wire sub-assembly RH connector.
Disconnect the N23 combination meter assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| g2-3 (TRN) - N23-6 (TRNR) | Always | Below 1 Ω |
| g2-4 (E) - Body ground | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Component without harness connected
(Rear Combination Light Socket and Wire Sub-assembly RH) |
Disconnect the rear combination light socket and wire sub-assembly RH connector.
Apply battery voltage to the rear combination light socket and wire sub-assembly RH and check that the light illuminates.
| Condition | Specified Condition |
|---|---|
| Battery positive (+) → Terminal 3 (TRN)
Battery negative (-) → Terminal 4 (E) |
Turn signal light illuminates |
| Proceed to |
|---|
| OK |
| NG |
OK
NG