(5) If the voltage is OK, go to Step 6. If no voltage
is detected, check for an open circuit between fuse
and SCTM. Repair as necessary.
(6) Check for voltage a the seat belt solenoid
13-way connector under the seat. If OK, test sole-
noid(s) for voltage. If no voltage is present, check for
an open circuit between the SCTM and the seat belt
connector. If OK, replace the SCTM. If not OK, repair
circuit as necessary.
BOTH SEAT BELTS LOCKED WITH THE IGNITION SWITCH IN
THE OFF POSITION, AND THE SCTM NOT TIMED OUT.
With either door open, ensure that the timer has
not timed out.
(1) Using a DVOM, check for battery voltage at
pin 5 of the SCTM 13-way connector. If no voltage is
present, go to Step 2. If voltage is present, go to Step
5.
(2) Check fuse 13 in the PDC and fuse 15 in the
Junction Block. If fuses are OK, go to Step 4. If fuses
are not OK, replace fuse(s). If fuse blows again, go to
Step 3.
(3) Disconnect the SCTM 13-way connector and
replace fuse. Check if fuse blows. If fuse blows check
circuit for shorts to ground between the SCTM and
the fuse. If fuse is OK, connect the SCTM and if fuse
blows, check for shorts to ground between the SCTM
and the seat belt solenoid. Repair as necessary.
(4) If voltage is OK, go to Step 5. If voltage is not
present, check for an open circuit between the fuse
and the SCTM. Repair as necessary.
(5) Using a DVOM, check from the SCTM 13-way
connector, the door ajar switches, and circuits for an
open circuit and check for a shorted to ground circuit.
If open or shorted circuit, repair as necessary. If OK,
replace the SCTM.
BOTH SEAT BELTS LOCK AND UNLOCK WITH THE IGNITION
SWITCH ON OR WHEN THE PASSENGER DOOR AJAR
SWITCH IS ACTIVATED BUT NOT WHEN THE DRIVER DOOR
AJAR SWITCH IS ACTIVATED.
Using a DVOM, check from the SCTM to the
driver door ajar switch circuit for an open circuit and
for a short to ground. Check pin 2 of the SCTM
13-way connector to ground for continuity. If not con-
tinuity, check for an open or shorted circuit and
repair as necessary or replace the door ajar switch. If
continuity is present, replace the SCTM. The system
will function improperly from the effected door.
BOTH SEAT BELTS LOCK AND UNLOCK WITH THE IGNITION
SWITCH ON OR WHEN THE DRIVER DOOR AJAR SWITCH IS
ACTIVATED BUT NOT WHEN THE PASSENGER DOOR AJAR
SWITCH IS ACTIVATED.
Using a DVOM, check from the SCTM to the pas-
senger door ajar switch circuit for an open or short to
ground. Check pin 3 of the SCTM 13-way connector
to ground for continuity. If no continuity, check for
open or shorted circuit and repair as necessary or
replace door ajar switch. If OK, replace the SCTM.
System will function improperly from the effected
door.
DRIVER SEAT BELT LOCKED, PASSENGER SEAT BELT
UNLOCKED.
Using a DVOM, check the seat belt solenoid from
pin 7 of the SCTM to ground for a reading of 50-60
V. If OK, replace the SCTM. If not OK, check for an
open or shorted ground circuit and repair as neces-
sary. Or replace the seat belt retractor if the open or
shorted circuit is in the solenoid. The retractor is
integral to the seat back and the entire seat
back must be replaced if the retractor found to
be defective.
PASSENGER SEAT BELT LOCKED, DRIVER SEAT BELT
UNLOCKED.
Using a DVOM, check the seat belt solenoid from
pin 8 of the SCTM to ground for a reading of 50-60
V. If OK, replace the SCTM. If not OK, check for an
open or shorted ground circuit and repair as neces-
sary. Or replace the seat belt retractor if the open or
shorted circuit is in the solenoid. The retractor is
integral to the seat back and the entire seat
back must be replaced if the retractor is found
to be defective.
REMOVAL
(1) Adjust the drivers seat to its full forward posi-
tion.
(2) Disconnect and isolate the battery negative
remote cable.
(3) Using a razor knife or equivalent, cut the car-
pet a small amount (about an inch or so) to access
the Seat Belt Control Timer Module (SCTM).
(4) Disconnect the electrical connector.
(5) Remove the two screws retaining the SCTM.
(6) Remove the SCTM from the vehicle.
INSTALLATION
(1) Install the Seatbelt Control Timer Module
(SCTM) into the vehicle.
(2) Install the two screws retaining the SCTM.
(3) Connect the electrical connector.
(4) Connect the battery negative remote cable.
(5) Adjust the drivers seat to its desired position.
SEAT BELT HEIGHT
ADJUSTER
REMOVAL
(1) Remove adjuster knob and turning loop cover.
JR
RESTRAINTS
8O - 17
SEAT BELT CONTROL TIMER MODULE - JR27 - EXPORT (Continued)