255(3) Check the wire harness between the fuse box and the connector of the SRS unit
CAUTION
If it is not handled properly, the airbag assembly may be triggered and deployed, leading to serious injury to a
person. Therefore, prior to handling, read the service cautions carefully. See service cautions for SRS.
1Turn the ignition switch to LOCK.
2Loosen the negative (-) terminal cable from the battery and wait for over 1 minute.
3Remove steering column hood.
4Loosen the connector of the clock spring.
5Remove glove box (along with passenger airbag assembly)
6Loosen passenger airbag assembly connectors.
7Remove left trim plate.
8Loosen all the SRS unit connectors.
9Reconnect the negative (-) terminal cable of the battery and turn ignition switch ON, check whether the
electrical potential between pins 5 and 6 (ground) of the connector of SRS unit is higher than 9V.
Yes: continue with next step.
No: replace the wire harness.
VTurn the ignition switch to LOCK. 11 Loosen the negative (-) terminal cable from the battery and wait for over 1 minute. 12 Remove left trim plate. 13 Disconnect the adaptor connector of SRS unit. 14 Reconnect the battery negative (-) terminal cable and turn the ignition switch ON, check whether the
voltage between the corresponding pin of the connector and the pin (ground) is higher than 9V.
Yes: completion of trouble diagnosis.
No: replace the wire harness.
5. Driver side troubleDTC
B1 346
B1 347
B1 348
B1 349
CAUTION
● If it is not handled properly, the airbag assembly may be triggered and deployed,leading to s erious injury to a person. Therefore, prior to handling, read the service cautionscarefu lly .
See s erv ice cau t io n s fo r SRS
If there is driver airbag
● The resistance between terminals of the SRS unit connectors is out of range.
The wire harness of the driver airbag of SRS is short or open circuited.
● Driv er airb ag as s emb ly tro u ble.
● Clock spring internal trouble.
● Trouble of the connector of the circuit between clock spring and SRS ECU.
● The wire harness between clock spring and SRS ECU is open or short-circuited.
● In co rrect in s ert io n o f t h e co n n ect o r o f t h e d riv er airb ag g en erat o r o f SRS. Driver airbag trouble (high or low resistance, short circuit, ground, etc.)
Ch e c kin g Co n d it io n s
Pos s ib le caus e
303Figure 6 A/C System Electrical Appliance DiagramIII. Protecting Device1. Low temperature protection
Evaporator temperature sensor, when the sensed temperature is lower than 3°C, the compressor clutch
is de-energized and stops operation.
2. High temperature protection
Water temperature sensor, when the sensed water temperature reaches 109°C, the compressor clutch is
de-energized and stops operation.
3. Low pressure protection
When pressure sensed by the pressure switch is lower than 0.25MPa, the compressor clutch is de-
energized and stops operation.
4. Voltage protection
When the pressure sensed by the pressure switch reaches 1.7MPa, radiator fan rotates.
5. High pressure protection
When the pressure sensed by the pressure switch reaches 2.6MPa, the compressor clutch is de-energized
and stops operation.
6. Normal pressure
When system pressure reaches 0.25MPa~2.4MPa, control the A/C idle speed. Color of wire:R-Red Bl-Blue Y-Yellow Lg-Light green Br-Brown B-Black P-Pink G-Green W-White Gr-Gray
1. Battery 2. Main Fuse Box 3. Alternator 4. Ignition Switch 5. Idle Rise Valve 6. Blower 7. Relay
8. Blower Regulating Resistance 9. Blower Switch 10. A/C Switch 11. A/C Low Pressure Switch
12. Compressor 13. Condensor Fan 14. Radiator Fan 15. A/C High Pressure Switch
16. Water Temperature Sensor 17. Evaporator Temperature Sensor 18. Electronic Wind Door Actuator Switch
19. Electronic Wind Door Actuator 20. Revolution Sensor 21. Engine ECU
