Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM100000002579B |
Model Year Start: 2023 |
Model: GR Corolla |
Prod Date Range: [09/2022 -
] |
Title: METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM (for 12.3 Inch Display): B150819; Turn Signal/Hazard Flasher Circuit Current Above Threshold; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - ] |
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, all of the turn signal lights in that circuit will not blink.
DTC No.
|
Detection Item
|
DTC Detection Condition
|
Trouble Area
|
B150819
|
Turn Signal/Hazard Flasher Circuit Current Above Threshold
|
Diagnosis Condition:
-
Auxiliary battery voltage is 10 V or more
Malfunction Status:
-
Short in turn signal light circuit
|
-
Headlight assembly
-
Rear Combination Light Assembly
-
Rear turn signal light LED
-
Outer rear view mirror assembly
-
Side turn signal light assembly
-
Harness or connector
-
Combination meter assembly
|
WIRING DIAGRAM
LH SIDE
RH SIDE
CAUTION / NOTICE / HINT
NOTICE:
-
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.
-
Inspect the turn signal light bulbs before performing the following procedure.
-
When replacing the combination meter assembly, update the ECU security key.
Click here
PROCEDURE
(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
|
A
|
|
|
2.
|
CHECK LH SIDE LIGHTS (REAR COMBINATION LIGHT ASSEMBLY LH)
|
(a) Disconnect the O43 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.
Result
|
Proceed to
|
LH side turn signal lights blink
|
A
|
LH side turn signal lights do not blink
|
B
|
B
|
|
|
3.
|
CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT ASSEMBLY LH - COMBINATION METER ASSEMBLY)
|
(a) Disconnect the O43 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:
Tester Connection
|
Condition
|
Specified Condition
|
O43-4 (B) or I5-22 (TRNL) - Body ground
|
Always
|
10 kΩ or higher
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
4.
|
CHECK LH SIDE LIGHTS (OUTER REAR VIEW MIRROR ASSEMBLY LH)
|
(a) Connect the O43 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.
Result
|
Proceed to
|
LH side turn signal lights blink
|
A
|
LH side turn signal lights do not blink
|
B
|
A
|
|
|
5.
|
INSPECT SIDE TURN SIGNAL LIGHT ASSEMBLY LH
|
Click here
6.
|
CHECK LH SIDE LIGHTS (HEADLIGHT ASSEMBLY LH)
|
(a) Connect the L9 outer rear view mirror assembly LH connector.
(b) Disconnect the A170 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.
Result
|
Proceed to
|
LH side turn signal lights blink
|
A
|
LH side turn signal lights do not blink
|
B
|
B
|
|
|
7.
|
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
|
A170-6 (B), L9-5 (B) or I5-5 (LL) - Body ground
|
Always
|
10 kΩ or higher
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
8.
|
CHECK RH SIDE LIGHTS (REAR COMBINATION LIGHT ASSEMBLY RH)
|
(a) Disconnect the O42 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.
Result
|
Proceed to
|
RH side turn signal lights blink
|
A
|
RH side turn signal lights do not blink
|
B
|
B
|
|
|
9.
|
CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT ASSEMBLY RH - COMBINATION METER ASSEMBLY)
|
(a) Disconnect the O42 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:
Tester Connection
|
Condition
|
Specified Condition
|
O42-4 (B) or G158-21 (TRNR) - Body ground
|
Always
|
10 kΩ or higher
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
10.
|
CHECK RH SIDE LIGHTS (OUTER REAR VIEW MIRROR ASSEMBLY RH)
|
(a) Connect the O42 rear combination light assembly RH connector.
(b) Connect the I5 combination meter assembly connector.
(c) Disconnect the A171 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.
Result
|
Proceed to
|
RH side turn signal lights blink
|
A
|
RH side turn signal lights do not blink
|
B
|
A
|
|
|
11.
|
INSPECT SIDE TURN SIGNAL LIGHT ASSEMBLY RH
|
Click here
12.
|
CHECK RH SIDE LIGHTS (HEADLIGHT ASSEMBLY RH)
|
(a) Connect the K10 outer rear view mirror assembly RH connector.
(b) Disconnect the I5 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.
Result
|
Proceed to
|
RH side turn signal lights blink
|
A
|
RH side turn signal lights do not blink
|
B
|
B
|
|
|
13.
|
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
|
A171-6 (B), K10-5 (B) or I5-6 (LR) - Body ground
|
Always
|
10 kΩ or higher
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
|