Page 1006 of 1310
7
4.
Remedy the malfunctions indicated by th
diagnosis codes, disconnect the diagnosis code
check harness, and then reconnect the valve
relay harness. Then turn the ignition switch to ON
again to check the ABS warning lamp. (Refer to
P.35B-19.) If the lamp indicates a malfunction,
the valve relay system may be defective. (Refer
to P.35B-17)
ERASING DIAGNOSTIC CODES
With the MUT-II
Connect the MUT-II to the diagnosis connector (16-
pin), then erase the diagnostic codes.
Without the MUT-II
Removing the battery cable from the battery (-)
terminal for 10 seconds or more, then reconnect the
cable.
See next page.
ABS <2WD> - Troubleshooting35B-7
Page 1031 of 1310

10
TROUBLESHOOTING
INSPECTION CHART FOR DIAGNOSIS CODES
Inspect according to the inspection chart that is appropriate for the malfunction code.
Code No. Diagnosis item Reference page
14 Analog G-sensor system in the SRS-ECU -
15, 16 Safing G-sensor system in the SRS-ECU -
21, 22, 61, 62 Driver’s side air bag module (squib) system 52B-5
24, 25, 64, 65 Front passenger’s side air bag module (squib) system 52B-6
31, 32 SRS-ECU capacitor system -
34* Connector lock system -
35 SRS-ECU capacitor system -
41* IG1 (A) power circuit system 52B-7
42* IG1 (B) power circuit system 52B-7
43 SRS warning lamp drive circuit system Lamp does not illuminate. * 52B-7
Lamp does not switch off. -
44 SRS warning lamp drive circuit system -
45 SRS-ECU non volatile memory (EEPROM) and A/D converter system -
51, 52 Driver’s side air bag module (squib ignition drive circuit) system -
54, 55 Front passenger’s side sir bag module (squib ignition drive circuit) system -
NOTE
(1) *: if the vehicle condition return to normal, the diagnosis code will be automatically erased, and the SRS warning
lamp will return to normal.
(2) If the vehicle has a discharged battery it will store the fault codes 41 or 42. When these diagnosis codes are
displayed, check the battery.
INSPECTION PROCEDURE CLASSIFIED BY DIAGNOSIS CODE
Code No. 21,22, 61 or 62 Driver’s side air bag module
(squib) systemProbable cause
These diagnosis codes are output if there is abnormal resistance between the
input terminals of the driver’s side air bag module (squib).
The trouble causes for each diagnosis code No. are as follows.·
Malfunction of clock spring
·
Open-circuit in clock spring due to inappropriate neutral
position.
·
Malfunction of wiring harnesses or connectors
·
Malfunction of driver’s side air bag module (squib)
·
Malfunction of SRS-ECU
Code No. Trouble symptoms
21
·
Short in driver’s side air bag module (squib) or harness short
·
Short in clock spring
22
·
Open circuit in driver’s side air bag module (squib) or open harness
·
Open circuit in clock spring
·
Disconnected connector in the driver’s side air bag module (squib).
·
Open circuit in clock spring due to inappropriate neutral position.
·
Malfunction of connector contact
61
·
Short in driver’s side air bag module (squib) harness leading to the power supply
62
·
Short in driver’s side air bag module (squib) harness leading to the earth
52B-5SRS - Troubleshooting
Page 1090 of 1310

8
SEALANT
Item Specified sealant Remark
Sensor cable 3M ATD Part No. 8625 or equivalent Ribbon sealer
TROUBLESHOOTING
STANDARD FLOW OF DIAGNOSTIC TROUBLESHOOTING
Refer to GROUP 00 – How to Use Troubleshooting/Inspection Service Points.
DIAGNOSIS FUNCTION
DIAGNOSIS CODE CHECK
Connect the MUT-II
to the diagnosis connector (16 –pin) under the instrument under cover, then check diagnosis codes.
(Refer to GROUP 00 – How to Use Troubleshooting/Inspection Service Points.)
ERASING DIAGNOSIS CODES
Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points.
INSPECTION CHART FOR DIAGNOSIS CODES
Inspect according to the inspection chart that is appropriate for the malfunction code.
Code No. Diagnosis ItemReference Page
11, 12, 13 Front impact sensor system 52B-7
21, 22 Air bag module (squib) system 52B-8
31, 32 SDU capacitor system 52B-9
33* Cranking signal system 52B-10
34* Connector lock system 52B-11
41* IG1 (A) power circuit system 52B-11
42* IG1 (B) power circuit system 52B-12
43 SRS warning lamp drive circuit system
Lamp does not illuminate*52B-13
SRS warning lamp drive circuit system
Lamp does not switch off52B-14
44 SRS warning lamp drive circuit system 52B-14
45 SDU non-volatile memory (EEPROM) and A/D converter system 52B-14
NOTE
(1) *: If the vehicle condition returns to normal, the diagnosis code will be automatically erased, and the SRS warning lamp will
return to normal.
(2) If the vehicel has a discharged battery it will store the fault codes 41 or 42. When these diagnosis codes are displayed, check
the battery.
52B-6SRS – Sealant/Troubleshooting
52400060015
WHEN USING THE MUT-II
Connect the MUT-II to the diagnosis connector and erase the diagnosis code.
Caution
Turn off the ignition switch before connecting or disconnecting the MUT-II.
52400310097
52400320063
52400330123