| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM10000000257B2 |
| Model Year Start: 2023 | Model: GR Corolla | Prod Date Range: [09/2022 - 11/2022] |
| Title: METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM (except 12.3 Inch Display): B150819; Turn Signal/Hazard Flasher Circuit Current Above Threshold; 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022] | ||
|
DTC |
B150819 |
Turn Signal/Hazard Flasher Circuit Current Above Threshold |
DESCRIPTION
This DTC is stored when the combination meter assembly detects a short in a turn signal light circuit.
HINT:
If there is a short in a turn signal light circuit, the turn signal lights on the side with the short circuit will blink faster than usual.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
DTC Output from |
Priority |
|---|---|---|---|---|---|
|
B150819 |
Turn Signal/Hazard Flasher Circuit Current Above Threshold |
Diagnosis Condition:
Malfunction Status:
|
for TMC Made
for TMMMS Made
|
Combination Meter |
A |
- *1: for LED Type Front Turn Signal Light
- *2: for Bulb Type Front Turn Signal Light
WIRING DIAGRAM
FOR TMC MADE
LH SIDE
RH SIDE
FOR TMMMS MADE
LH SIDE
RH SIDE
CAUTION / NOTICE / HINT
NOTICE:
- When replacing any of the following ECUs, always replace it with a new one. If any of the following ECUs is replaced with one which was installed to another vehicle, the information stored in it will not match the information from the vehicle and a DTC may be stored.
-
for TMC Made
When replacing the combination meter assembly, update the ECU security key.
Click here
![2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - ]; SETUP: WHEN REPLACING OR REMOVING/INSTALLING PARTS: UPDATE ECU SECURITY KEY](/t3Portal/stylegraphics/info.gif)
- Inspect the turn signal light bulbs before performing the following procedure.
PROCEDURE
|
1. |
CHECK LIGHTS |
(a) Inspect the illumination of each turn signal light.
|
Result |
Proceed to |
|---|---|
|
All LH turn signal lights do not blink |
A |
|
All RH turn signal lights do not blink |
B |
| B |
|
|
|
2. |
CONFIRM MODEL |
(a) Choose the model to be inspected.
|
Result |
Proceed to |
|---|---|
|
for TMC Made |
A |
|
for TMMC Made |
B |
| B |
|
|
|
3. |
CHECK LH SIDE LIGHTS (REAR COMBINATION LIGHT ASSEMBLY LH) |
(a) Disconnect the O104*1, O43*2 rear combination light assembly LH connector.
(b) Operate the headlight dimmer switch assembly and check that the LH side turn signal lights other than the rear turn signal light blink.
HINT:
If the LH side turn signal lights blink, the rear light assembly LH is malfunctioning.
- *1: for Sedan
- *2: for Hatchback
|
Result |
Proceed to |
|---|---|
|
LH side turn signal lights blink |
A |
|
LH side turn signal lights do not blink |
B |
| A |
|
REPLACE REAR COMBINATION LIGHT ASSEMBLY LH for Hatchback: Click here
for Sedan: Click here
|
|
|
4. |
CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT ASSEMBLY LH - COMBINATION METER ASSEMBLY) |
(a) Disconnect the O104*1, O43*2 combination light assembly LH connector.
(b) Disconnect the I5 combination meter assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance (for Sedan):
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O104-3 (B) or I5-22 (TRNL) - Body ground |
Always |
10 kΩ or higher |
Standard Resistance (for Hatchback):
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O43-4 (B) or I5-22 (TRNL) - Body ground |
Always |
10 kΩ or higher |
- *1: for Sedan
- *2: for Hatchback
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
5. |
CHECK LH SIDE LIGHTS (OUTER REAR VIEW MIRROR ASSEMBLY LH) |
(a) Connect the O104*1, O43*2 rear combination light assembly LH connector.
(b) Connect the I5 combination meter assembly connector.
(c) Disconnect the L9 outer rear view mirror assembly LH connector.
(d) Operate the headlight dimmer switch assembly and check that the LH side turn signal lights other than the side turn signal light blink.
HINT:
If the LH side turn signal lights blink, the outer rear view mirror assembly LH is malfunctioning.
- *1: for Sedan
- *2: for Hatchback
|
Result |
Proceed to |
|---|---|
|
LH side turn signal lights blink |
A |
|
LH side turn signal lights do not blink |
B |
| B |
|
|
|
6. |
INSPECT SIDE TURN SIGNAL LIGHT ASSEMBLY LH |
(a) Remove the side turn signal light assembly LH.
Click here
(b) Inspect the side turn signal light assembly LH.
Click here
| OK |
|
| NG |
|
|
7. |
CHECK LH SIDE LIGHTS (HEADLIGHT ASSEMBLY LH) |
(a) Connect the L9 outer rear view mirror assembly LH connector.
(b) Disconnect the A131*1, A134*2 headlight assembly LH connector.
(c) Operate the headlight dimmer switch assembly and check that the LH side turn signal lights other than the headlight turn signal light blink.
HINT:
If the LH side turn signal lights blink, the headlight assembly LH is malfunctioning.
- *1: for LED Type Front Turn Signal Light
- *2: for Bulb Type Front Turn Signal Light
|
Result |
Proceed to |
|---|---|
|
LH side turn signal lights blink |
A |
|
LH side turn signal lights do not blink |
B |
| A |
|
|
|
8. |
CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY LH AND OUTER REAR VIEW MIRROR ASSEMBLY LH - COMBINATION METER ASSEMBLY) |
(a) Disconnect the I5 combination meter assembly connector.
(b) Disconnect the L9 outer rear view mirror assembly LH connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A131-6 (B)*1, A134-1 (B)*2, L9-5 (B) or I5-5 (LL) - Body ground |
Always |
10 kΩ or higher |
- *1: for LED Type Front Turn Signal Light
- *2: for Bulb Type Front Turn Signal Light
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
9. |
CONFIRM MODEL |
(a) Choose the model to be inspected.
|
Result |
Proceed to |
|---|---|
|
LED Type |
A |
|
Bulb Type |
B |
| B |
|
|
|
10. |
CHECK LH SIDE TURN SIGNAL LIGHTS (FRONT TURN SIGNAL LIGHT CIRCUIT) |
(a) Disconnect the A83 headlight assembly LH connector.
(b) Operate the turn signal switch and check that the LH side turn signal lights other than the front turn signal light blink.
HINT:
If the LH side turn signal lights other than the front turn signal light blink, the headlight assembly LH is malfunctioning.
|
Result |
Proceed to |
|---|---|
|
LH side turn signal lights other than the front turn signal light blink |
A |
|
Problem symptoms do not change (All LH side turn signal lights do not blink) (w/ Side Turn Signal Light) |
B |
|
Problem symptoms do not change (All LH side turn signal lights do not blink) (w/o Side Turn Signal Light) |
C |
| A |
|
| B |
|
| C |
|
|
11. |
CHECK LH SIDE TURN SIGNAL LIGHTS (FRONT TURN SIGNAL LIGHT CIRCUIT) |
(a) Disconnect the A122 headlight assembly LH connector.
(b) Operate the turn signal switch and check that the LH side turn signal lights other than the front turn signal light blink.
HINT:
If the LH side turn signal lights other than the front turn signal light blink, the front turn signal light socket LH is malfunctioning.
|
Result |
Proceed to |
|---|---|
|
LH side turn signal lights other than the front turn signal light blink |
A |
|
Problem symptoms do not change (All LH side turn signal lights do not blink) (w/ Side Turn Signal Light) |
B |
|
Problem symptoms do not change (All LH side turn signal lights do not blink) (w/o Side Turn Signal Light) |
C |
| A |
|
| C |
|
|
|
12. |
CHECK LH SIDE TURN SIGNAL LIGHTS (SIDE TURN SIGNAL LIGHT CIRCUIT) |
(a) Connect the headlight assembly LH connector.
(b) Disconnect the L9 outer rear view mirror assembly LH connector.
(c) Operate the turn signal switch and check that the LH side turn signal lights other than the side turn signal light blink.
HINT:
If the LH side turn signal lights other than the side turn signal light blink, a component of the outer rear view mirror assembly LH is malfunctioning.
|
Result |
Proceed to |
|---|---|
|
LH side turn signal lights other than the side turn signal light blink |
A |
|
Problem symptoms do not change (All LH side turn signal lights do not blink) |
B |
| B |
|
|
|
13. |
CHECK LH SIDE TURN SIGNAL LIGHTS (OUTER REAR VIEW MIRROR ASSEMBLY LH) |
(a) Remove the side turn signal light assembly LH from outer rear view mirror assembly LH.
Click here
(b) Connect the wire harness connector to the outer rear view mirror assembly LH connector.
(c) Operate the turn signal switch and check that the LH side turn signal lights other than the side turn signal light blink.
HINT:
If all LH side turn signal lights do not blink, the outer rear view mirror assembly LH is malfunctioning.
|
Result |
Proceed to |
|---|---|
|
LH side turn signal lights other than the side turn signal light blink |
A |
|
All LH side turn signal lights do not blink |
B |
| A |
|
| B |
|
|
14. |
CHECK LH SIDE TURN SIGNAL LIGHTS (REAR TURN SIGNAL LIGHT CIRCUIT) |
(a) Connect the outer rear view mirror assembly LH connector.*1
(b) Connect the headlight assembly LH connector.*2
(c) Disconnect the O104 rear combination light assembly LH connector.
(d) Operate the turn signal switch and check that the LH side turn signal lights other than the rear turn signal light blink.
HINT:
If the LH side turn signal lights other than the rear turn signal light blink, the rear combination light cord LH is malfunctioning.
- *1: w/ Side Turn Signal Light
- *2: w/o Side Turn Signal Light
|
Result |
Proceed to |
|---|---|
|
LH side turn signal lights other than the rear turn signal light blink |
A |
|
Problem symptoms do not change (All LH side turn signal lights do not blink) |
B |
| A |
|
|
|
15. |
CHECK HARNESS AND CONNECTOR (LH SIDE EACH PARTS - COMBINATION METER ASSEMBLY) |
(a) Disconnect the A83*1 or A122*2 headlight assembly LH connector.
(b) Disconnect the L9 outer rear view mirror assembly LH connector.*3
(c) Disconnect the I5 combination meter assembly connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A83-2 (B)*1, A122-1 (B)*2, L9-5 (B)*3 or I5-1 (LL) - Body ground |
Always |
10 kΩ or higher |
|
O104-3 (B) or I5-5 (TRNL) - Body ground |
Always |
10 kΩ or higher |
- *1: for LED Type Front Turn Signal Light
- *2: for Bulb Type Front Turn Signal Light
- *3: w/ Side Turn Signal Light
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
16. |
CONFIRM MODEL |
(a) Choose the model to be inspected.
|
Result |
Proceed to |
|---|---|
|
for TMC Made |
A |
|
for TMMC Made |
B |
| B |
|
|
|
17. |
CHECK RH SIDE LIGHTS (REAR COMBINATION LIGHT ASSEMBLY RH) |
(a) Disconnect the O103*1, O42*2 rear combination light assembly RH connector.
(b) Operate the headlight dimmer switch assembly and check that the RH side turn signal lights other than the rear turn signal light blink.
HINT:
If the RH side turn signal lights blink, the rear light assembly RH is malfunctioning.
- *1: for Sedan
- *2: for Hatchback
|
Result |
Proceed to |
|---|---|
|
RH side turn signal lights blink |
A |
|
RH side turn signal lights do not blink |
B |
| A |
|
REPLACE REAR COMBINATION LIGHT ASSEMBLY RH for Hatchback: Click here
for Sedan: Click here
|
|
|
18. |
CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT ASSEMBLY RH - COMBINATION METER ASSEMBLY) |
(a) Disconnect the O103*1, O42*2 combination light assembly RH connector.
(b) Disconnect the I5 combination meter assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance (for Sedan):
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O103-3 (B) or I5-21 (TRNR) - Body ground |
Always |
10 kΩ or higher |
Standard Resistance (for Hatchback):
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O42-4 (B) or I5-21 (TRNR) - Body ground |
Always |
10 kΩ or higher |
- *1: for Sedan
- *2: for Hatchback
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
19. |
CHECK RH SIDE LIGHTS (OUTER REAR VIEW MIRROR ASSEMBLY RH) |
(a) Connect the O103*1, O42*2 rear combination light assembly RH connector.
(b) Connect the I5 combination meter assembly connector.
(c) Disconnect the K10 outer rear view mirror assembly RH connector.
(d) Operate the headlight dimmer switch assembly and check that the RH side turn signal lights other than the side turn signal light blink.
HINT:
If the RH side turn signal lights blink, the outer rear view mirror assembly RH is malfunctioning.
- *1: for Sedan
- *2: for Hatchback
|
Result |
Proceed to |
|---|---|
|
RH side turn signal lights blink |
A |
|
RH side turn signal lights do not blink |
B |
| B |
|
|
|
20. |
INSPECT SIDE TURN SIGNAL LIGHT ASSEMBLY RH |
(a) Remove the side turn signal light assembly RH.
Click here
(b) Inspect the side turn signal light assembly RH.
Click here
| OK |
|
| NG |
|
|
21. |
CHECK RH SIDE LIGHTS (HEADLIGHT ASSEMBLY RH) |
(a) Connect the K10 outer rear view mirror assembly RH connector.
(b) Disconnect the A133*1, A132*2 headlight assembly RH connector.
(c) Operate the headlight dimmer switch assembly and check that the RH side turn signal lights other than the headlight turn signal light blink.
HINT:
If the RH side turn signal lights blink, the headlight assembly RH is malfunctioning.
- *1: for LED Type Front Turn Signal Light
- *2: for Bulb Type Front Turn Signal Light
|
Result |
Proceed to |
|---|---|
|
RH side turn signal lights blink |
A |
|
RH side turn signal lights do not blink |
B |
| A |
|
|
|
22. |
CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY RH AND OUTER REAR VIEW MIRROR ASSEMBLY RH - COMBINATION METER ASSEMBLY) |
(a) Disconnect the I5 combination meter assembly connector.
(b) Disconnect the K10 outer rear view mirror assembly RH connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A133-6 (B)*1, A132-1 (B)*2, K10-5 (B) or I5-6 (LR) - Body ground |
Always |
10 kΩ or higher |
- *1: for LED Type Front Turn Signal Light
- *2: for Bulb Type Front Turn Signal Light
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
23. |
CONFIRM MODEL |
(a) Choose the model to be inspected.
|
Result |
Proceed to |
|---|---|
|
LED Type |
A |
|
Bulb Type |
B |
| B |
|
|
|
24. |
CHECK RH SIDE TURN SIGNAL LIGHTS (FRONT TURN SIGNAL LIGHT CIRCUIT) |
(a) Disconnect the A82 headlight assembly RH connector.
(b) Operate the turn signal switch and check that the RH side turn signal lights other than the front turn signal light blink.
HINT:
If the RH side turn signal lights other than the front turn signal light blink, the headlight assembly RH is malfunctioning.
|
Result |
Proceed to |
|---|---|
|
RH side turn signal lights other than the front turn signal light blink |
A |
|
Problem symptoms do not change (All RH side turn signal lights do not blink) (w/ Side Turn Signal Light) |
B |
|
Problem symptoms do not change (All RH side turn signal lights do not blink) (w/o Side Turn Signal Light) |
C |
| A |
|
| B |
|
| C |
|
|
25. |
CHECK RH SIDE TURN SIGNAL LIGHTS (FRONT TURN SIGNAL LIGHT CIRCUIT) |
(a) Disconnect the A121 headlight assembly RH connector.
(b) Operate the turn signal switch and check that the RH side turn signal lights other than the front turn signal light blink.
HINT:
If the RH side turn signal lights other than the front turn signal light blink, the front turn signal light socket RH is malfunctioning.
|
Result |
Proceed to |
|---|---|
|
RH side turn signal lights other than the front turn signal light blink |
A |
|
Problem symptoms do not change (All RH side turn signal lights do not blink) (w/ Side Turn Signal Light) |
B |
|
Problem symptoms do not change (All RH side turn signal lights do not blink) (w/o Side Turn Signal Light) |
C |
| A |
|
| C |
|
|
|
26. |
CHECK RH SIDE TURN SIGNAL LIGHTS (SIDE TURN SIGNAL LIGHT CIRCUIT) |
(a) Connect the headlight assembly RH connector.
(b) Disconnect the K10 outer rear view mirror assembly RH connector.
(c) Operate the turn signal switch and check that the RH side turn signal lights other than the side turn signal light blink.
HINT:
If the RH side turn signal lights other than the side turn signal light blink, a component of the outer rear view mirror assembly RH is malfunctioning.
|
Result |
Proceed to |
|---|---|
|
RH side turn signal lights other than the side turn signal light blink |
A |
|
Problem symptoms do not change (All RH side turn signal lights do not blink) |
B |
| B |
|
|
|
27. |
CHECK RH SIDE TURN SIGNAL LIGHTS (OUTER REAR VIEW MIRROR ASSEMBLY RH) |
(a) Remove the side turn signal light assembly RH from outer rear view mirror assembly RH.
Click here
(b) Connect the wire harness connector to the outer rear view mirror assembly RH connector.
(c) Operate the turn signal switch and check that the RH side turn signal lights other than the side turn signal light blink.
HINT:
If all RH side turn signal lights do not blink, the outer rear view mirror assembly RH is malfunctioning.
|
Result |
Proceed to |
|---|---|
|
RH side turn signal lights other than the side turn signal light blink |
A |
|
All RH side turn signal lights do not blink |
B |
| A |
|
| B |
|
|
28. |
CHECK RH SIDE TURN SIGNAL LIGHTS (REAR TURN SIGNAL LIGHT CIRCUIT) |
(a) Connect the outer rear view mirror assembly RH connector.*1
(b) Connect the headlight assembly RH connector.*2
(c) Disconnect the O103 rear combination light assembly RH connector.
(d) Operate the turn signal switch and check that the RH side turn signal lights other than the rear turn signal light blink.
HINT:
If the RH side turn signal lights other than the rear turn signal light blink, the rear combination light cord RH is malfunctioning.
- *1: w/ Side Turn Signal Light
- *2: w/o Side Turn Signal Light
|
Result |
Proceed to |
|---|---|
|
RH side turn signal lights other than the rear turn signal light blink |
A |
|
Problem symptoms do not change (All RH side turn signal lights do not blink) |
B |
| A |
|
|
|
29. |
CHECK HARNESS AND CONNECTOR (RH SIDE EACH PARTS - COMBINATION METER ASSEMBLY) |
(a) Disconnect the A82*1 or A121*2 headlight assembly RH connector.
(b) Disconnect the K10 outer rear view mirror assembly RH connector.*3
(c) Disconnect the I5 combination meter assembly connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A82-2 (B)*1, A121-1 (B)*2, K10-5 (B)*3 or I5-2 (LR) - Body ground |
Always |
10 kΩ or higher |
|
O103-3 (B) or I5-6 (TRNR) - Body ground |
Always |
10 kΩ or higher |
- *1: for LED Type Front Turn Signal Light
- *2: for Bulb Type Front Turn Signal Light
- *3: w/ Side Turn Signal Light
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|