Supplemental Restraint System (SRS)
Troubleshooting (cont'd)
Modg C: Shon in one cowl son3ol, or open in both dash
sensors
Mode D: Open in ono da3h sensol
NOTE: The original radio has a coded theft protection
circuit. Be sure to get the customer's code number
before disconnecting the battery cables
1. Disconnect the battery negative cable and then the
positive cable. Then connect the short connector(s)
to the airbag(s) (see page 23'2721.
2. Connect Test Harness B between the SRS unit and
SRS main harness 18-P connector.
23-2AA
3. Measure the resistance between the left dash sen-
sor terminals 812 and 816, and between the right
dash sensor terminals 84 and 86.
lf resistance is more than 5 kO for eiiher set of
terminals, go to step 4.
lf resistance is less than 5 kO tor both sets of ter-
minals, the SRS unit is faulty. Substitute a
known-good SRS unit and recheck the voltages
according to the chart on page 23-283.
Supplemental Restraint System (SRSI
Troubleshooting {cont'dl
Modc H: Blown SRS No. 25 fur., ol opcn in the wire
NOTE: The original radio has a coded theft protection
circuit. Be sure to get the customer's code number
betore disconnecting the battery cables.
1. Ch€ck the SRS No. 25 (10 A) fuse in the under-dash
fuse/relay box. lf it's OK, go on to step 2.
lf it's blown, replace it with a now 10 A fuse, then
turn the ignition switch ON (ll):
. lf the fuse doesn't blow, 90 on to step 2.
. lf the fuse blows. troublsshoot as necessary to
find th6 short.
2. Disconnect the battery negative cable and then the
positive cable. Then connect the short connector(sl
(RED) to the airbag(s) (see page 23-272).
3. Conn€ct Teat Harnsss B between the SRS unit and
the SRS main harness 18-P connector.
SRS UNIT
23-292
23a7a10nl3161a17ra
26161oll12161a17|a
Reconnect th6 positiv€ 8nd negative cable to the
battery.
Measure ths voltage between the 813 terminal (+)
and body ground {-)with the ignition switch ON (ll).
TEST HAN ESS BoTMA:Z - SPOOs{X'
lf there is battery voltage, the SRS unit is faulty.
Replace it and rscheck the voltages according to
the chan on page 23-283.
lf there is lsss than b8ttery voltage, the SRS main
harness is faulty. Replace it and recheck the volt-
ag6s according to the chart on page 23-283.
