Page 1385 of 2189
From page 2l 10
Check for an open in the wire:
1. Turn the ignition switch OFF,and disconnect the iLrmPer
2. Remove the center dashboardlower cover (see section 20),
and disconnect the heater fanswitch 6P connector.3. Turn the ignition switch ON (ll).
4. Measure the voltage between
the No. 3 terminal and bodygrou nd.
Repair op.n in th6 wiro betw€enthe blower motor and tho heaterfan switch.
Check for an open in the wire:
1. Turn the ignition switch OFF.2. Check for continuity between
the No. 1 terminal of the heatertan switch 6P connector and
body ground.
Reolaco tho heater fan iwitch
Check tor an op€n in the wire
betw.en the heater tan switchand body ground. ll th€ wilo b OK,
check tor poor ground at G401 and
G102.
HEATER FAN SWITCH 5P CONNECTOR
Wire side oI female terminals
(cont'd)
21-11
Page 1386 of 2189
Troubleshooting -'96 - 98 Models
From page 21-10
Check the under-hood fuse/relayDOX:N/leasure the voltage between theNo. 3 terminal of the blowermotor relay 4P socket and bodyground,
ls there baftery voltage?
Check lor an open in th€ wire:1. Turn the ignition switch ON (ll).
2. Measure the voltage betweenthe No. 4 terminal of the blow-er motor relay 4P socket andbody ground.
Repair open in tho wire betweenthe No. 17 fuss and tho blowelmotor rclay,
Check for en opon in the wire:1. Turn the ignition switch OFF.2. Check for continuity betweenthe No. 2 terminal of the blow-er motor relay 4P socket andbody ground.
Check foi an open in the wirebetwe€n the blower motor relavand body glound. lf the wiro isOK, check fo. poor ground atG{01 and G4O2.
ls there continuity?
Repair open in the BLU/WHTwire b€tween the blower motorrelav and the blower motor.
Blower Motor (cont'dl
BLOWER MOTOR RELAY 'P SOCKET
1211
tt-l_T
trv)
i
21-12
Page 1387 of 2189

Mode Control Motor
To page 21-14
MODE CONTROL MOTOR 7P CONNECTOR
'1
I2I57
BLK/YEL
Wire side of female terminals
Mode control motor does not run,
or one of more modes are inoPela-
Check the No. '17 (7.5 A) fuse in
the under-dash fuse/relaY box.
Reolace the fuse, and recheck.
Check lor an open in the wire:
1. Disconnect the mode controlmotor 7P connector.2. Turn the ignition switch ON (ll).
3. Measure the voltage betweenthe No. l terminal and bodyg rou nd.
Repair open in the wire between
the No. 17 tuse and the mode
control motor.ls there batterY voltage?
Check {or an open in the wire:1. Turn the ignition switch OFF.
2. Check for continuity between
the No. 7 terminal of the mode
co nlrol motor 7P connector
and body ground.
Check for an open in the wire
batwe€n the mode contrcl motol
and body ground. lf the wir€ is OK,check for poor gtound at G/U)l and
G402.
ls there continuity?
Test the mode control motor (see
page21-471.Check the mod€ control linkage
and doors:1. Bemove the mode controlmotor (see page 21-47).2. Check the mode control linkageand doors for smooth move
ls the mode control motor OK?
Do the mode control linkageand doors move smoothlY?
Reolace the mode control motor,
I34561
BLK
[]
(cont'd)
Page 1388 of 2189
Troubleshooting -'96 - 98 Models
Mode Control Motor lcont'dl
From page 2l-13HEATER CONTROL PANEL lilP CONNECTOR
Wire side of lemaie terminals
Check tor a short in the wi.e(s):1. Remove the center dashboardlower cover (see section 20),and disconnect the heater con-trol panel 14P connector.2. Check for continuity betweenthe No. 1, 4, 7, 8 and 9 termi-nals and body ground individ-
Raprir.ny short in the wire(s)betw€en the mode control motorand the heater control panel.
Check for a shon to power:
Check the same wires {or voltage.
Repair short to pow6r in thewiro(3) betwoen the mode con-lrol motor .nd tha heate. controlprnel, This short also damag.stho heater cont.ol prnel. Repailthe short to power b€{ore replac-ing the heeter conlrol pan6l.
ls there any voltage?
To page 21 15
21-14
Page 1389 of 2189
From page 21-14
Check tor an open in the wire{s}:
Check for continuity between the
following terminals of the mode
control motor 7P connector and
the heater control Panel 14P con-
nector-7P: 14P:No.2 - No.4No.3 - No. 1No.4 - No.7No.5 - No.9No.6- No.8
Repair any opsn in the wirels)
bctwoan the mode control motor
and the hoator conlrol Panolls there continuitY?
Check Io. loo3. wires or Poorconnoctions at lhe hoat€r control
Danel 14P connactor, and 3t the
mod6 conilol motot 7P connec-
tor. It tho connoctions ara good.
rsDlaco the heat€r coilttol panel.
HEATER CONTROL PANEL 14P CONNECTOR
Wire side of {emale terminals
MODE CONTROL MOTOR 7P CONNECTOR
Wire side of female terminals
21-15
Page 1390 of 2189

Troubleshooting -'96 - 98 Models
Recirculation Control Motor
Becirculation control door doesnot change between FRESH andRECIBCULATE.
check the No- 17 (7.5 A) fuse inthe under-dash fuse/relay box.
Reolace the tuse. and recheck.
Check for an open in the wire:1. 0isconnect the recirculationcontrol motor 4P connector.2. Tu.n the ignition switch ON (ll).
3. Measure the voltage betweenthe No. l terminal and bodyground.
Repair open in the wir6 betweenthe No. 17Iuse and the recircula-lion conlrol motor.ls there battery voltage?
Check lhe recirculation control
1. Turn the ignition switch OFF.2. Test the recirculation controlmotor {see page 21 48).
Check the recirculation controllinkage and door:1. Remove the recirculation con'trol motor {see page 21 48}.2. Check the recirculation controllinkage and door for smooth
Do the recirculation control linkage and door move smoothly?Reoair the r€circulation controllinkage or door.
RECIRCULATION CONTROL MOTOR4P CONNECTOR
BLK/YEI-
Wire side of temale terminals
Io page 21 17
21-16
Page 1391 of 2189

From page 21-16
ls there any voltage?
Check {or a short in the wire(s):1. Remove the center dashboardlower cover (see section 20),
and disconnect the heater con_
trol panel 14P connector'
2. Check for continuity between
the No. 12 and No. 13 termi-
nals and body ground individ-
Repair 5hort in the wire{sl between
the recirculation control motor and
the heater control Panel
Check Ior a short to Power:Check the same wires for voltage
Repair short to Power in the
wire {s) between the recirculationcontrol motor and the heater
control panel. This short also
damages the heater controlpanel. Repair the short to Powerbetore replacing the heater con-
trol panel.
Check lor an open in the wire(s):
Check for continuity between the
following terminals of the recircu
lation control motor 4P connector
and the heater control Panel 14P
4P. 14P:No.2 - No. 12No.4 No. 13
Repair open in the wirelsl
between the recirculation control
motor and the heater controlpanel.
ls there continuitY?
Check for loose wires or Poorconnections at the heater control
Danel 14P connector, and at the
recirculation control motor 4P
connector. lf the connections aregood, replace the heater control
Danel,
HEATER CONTROL PANEL 14P CONNECTOR
I;-?45
789'o lx11121314
GRN/WHT
0) (0
GRN/BED
Wire side of female terminals
GRN/RED
GRN/RED
RECIRCULATION CONTROL MOTOR
4P CONNECTOR
Wire side of female tetminals
I23i--?156
78I'olx11121314
GRN/WHT
V)(v
145
7IIrol\l rr1213
GRN/WHT
r zl/lt
21-17
Page 1392 of 2189

Troubleshooting -'96 - 98 Models
Both heater and A/C do not work.
Check the No. 17 {7.5 A) fuse in theunderdash fuse/relay box, and theNo. 47 (7.5 A) fuse in the underhood fuse/relay box.
R.phce the fuso{s), .nd rccheck.
Chack tor an open in the wi.e:1. Remove the center dashboardlower cover (see section 20),and disconnect the heatercontrol panel 14P connector.2. Torn the ignition switch ON {ll).3. Measure the voltage betweenthe No. 2 terminal of theheater control panel 14P con-nector and body ground.
Rcpair opGn in th€ wiro betwoonthe No. 17 tuse and the hoatclcontrol panel.
ls there baftery voltage?
Check for an opon in the wiro:1. Turn the ignition switch OFF.2. Measure the voitage betweenthe No. 3 terminal of theheater control panel 14P con-nector and body ground.
Rgprii open in th6 wira b€twacnthe No. il7 tui. and the heat.tcont.ol p.nal.
ls there battery voltage?
Check foi an open in the wi.e:Check for continuity between theNo. 10 terminal ot the heater con-trol panel 14P connector andbody ground.
Check lor an opon in tho wireb€{w6on the hoator control oaneland body ground. lI the wirc isOK, check tor poor ground atG401 .nd G4O2.
Check for looae wiaos or ooolconnections at the hoater controlpanol 14P connector. lf the con-nactions dre good. 3ubstitute tknown-9ood heater controlpanel, and rech6ck. It tho symp-tom/indication 9oe3 .wry,replace the original heatel con-trol oanol.
Heater Control Panel
HEATER CONTROL PANEL 1,lP CONNECTOR
Wire side of female terminals
21-18