Mazda MX-6 1998, Workshop Manual

Page: 1109 / 1282

TROUBLESHOOTING [INSTRUMENTATION/DRIVER INFO.]
7 Water temperature gauge does not operate or is incorrect
TROUBLESHOOTING HINTS
Malfunction in water temperature gauge input signal circuit
© W ater temperature gauge does not operate or is incorrect
• W ater temperature sender unit malfunction
• Print plate malfunction
• Display unit assembly malfunction
• Malfunction in wiring harness between instrument cluster and water temperature sender unit
Malfunction in water temperature gauge operation circuit
© W ater temperature gauge does not operate or is incorrect
• Display unit assembly malfunction
STEP
INSPECTION ACTION
Turn ignition switch to LOCK.
Disconnect negative battery cable.
After 30 seconds or more, reconnect
negative battery cable.
Turn ignition switch to ON and LOCK 3 times.
Turn ignition switch to ON.
Push odometer/tripmeter switch 3 times.
W 6 U 9 0 1 W U V
Select DTC 25 by pushing odometer/tripmeter
switch
Does water temperature gauge needle
indicate repeatedly
H, neutral, C?
Yes Go to next step.
No Replace display unit assembly.
c r 0 9-22 INSTRUMENT CLUSTER
DISASSEMBLY/ASSEMBLY
Select DTC 24 by pushing odometer/tripmeter
switch.
Does LCD indicate “000” or "255”?
Yes
Go to next step.
No Go to step 6.
Remove meter hood.
Remove instrument cluster.
Disconnect water temperature sender unit
connector.
Check for continuity between terminal 2H at
instrument cluster (14-pin) connector of wiring
harness and ground.
Is there continuity?
Yes
Repair wiring harness between instrument cluster and
water temperature sender unit.
No
Go to next step.
I I I I
f " l ! \ l '‘ ii M i n i
x
2H
W 6 U 9 0 1 W U Y
0 9 -0 1 P -1 3