Description
DTC B142A IGNITION VOLTAGE
Ignition voltage is supplied to the air bag diagnosis sensor unit when the ignition is in the ON position. The air bag diagnosis sensor unit will monitor for low or high ignition voltage.
PART LOCATION
Refer to SRC-6, "Component Parts Location".
DTC Logic
DTC DETECTION LOGIC
With CONSULT
|
CONSULT name |
DTC |
DTC detecting condition |
Repair order |
| IGN VOLTAGE [LOW] | B142A | Ignition voltage low at air bag diagnosis sensor unit. | Refer to SRC-93, "Diagnosis Procedure". |
| IGN VOLTAGE [HIGH] | Ignition voltage high at air bag diagnosis sensor unit. |
DTC CONFIRMATION PROCEDURE (With CONSULT)
1.INSPECTION START
Turn ignition switch ON.
>> GO TO 2.
2.CHECK SELF-DIAG RESULT
Check for the DTC on CONSULT.
Is the DTC detected? YES >> Refer to SRC-93, "Diagnosis Procedure".
NO >> Inspection End.
Diagnosis Procedure
NOTE: Follow the procedures in numerical order when repairing malfunctioning parts. Confirm whether malfunction is eliminated using air bag warning lamp each time repair is finished. If malfunction is still observed, proceed to the next step. When malfunction is eliminated, further repair work is not required.
1.HARNESS CONNECTOR
Is there any visible damage to the connector? YES or NO YES >> Replace the harness.
NO >> GO TO 2
2.WIRING HARNESS
Is there any visible damage to the harness? YES or NO YES >> Replace the harness.
NO >> GO TO 3
3.AIR BAG DIAGNOSIS SENSOR UNIT
Replace the air bag diagnosis sensor unit. Refer to SR-26, "Removal and Installation".
>> GO TO 4
4.RELATED HARNESS
Replace the related harness.
>> END
B00D5 front passenger air bag off indicator
U1000 CAN COMM circuitBasic inspection
DIAGNOSIS AND REPAIR WORK FLOW
Work Flow
OVERALL SEQUENCE
DETAILED FLOW
1.OBTAIN INFORMATION ABOUT SYMPTOM
Interview the customer to obtain as much information as possible about the
conditions and environment under
which the malfunction occurred.
>> GO TO 2.
2.CHECK SYMPTOM
...
Sunshade system does not operate properly
Diagnosis Procedure
1.CHECK BCM POWER SUPPLY AND GROUND CIRCUIT
Check BCM power supply and ground circuit.
Refer to BCS-68, "Diagnosis Procedure" (with Intelligent Key System), BCS-128,
"Diagnosis Procedure" (without
Intelligent Key System).
Is the inspection result no ...
Precaution
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT
PRE-TENSIONER"
The Supplemental Restraint System such as “AIR BAG� and “SEAT BELT PRE-TENSIONER�,
used along
with a front seat belt, helps to reduce the risk or severity of injury to the
...