Cannot Change 4X4 Gears - Mazda B-Series 1997 Workshop Manual

J2
ELECTRONIC SHIFT TRANSFER CASE
Pinpoint Tests B
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Cannot Change 4x4 Gears
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Diagnostic trouble
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Refer to DTC chart for def~nltlon
code No. P1820, P1822,
P1 824, P1826, P I 828, P1 830,
P I 838,
P I
846, P I 848, P1 850,
P1 852, P1 854, P1 856, P I 858,
P1 860, PI 862, P1 864, P I 866,
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P1 867
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STEP INSPECTION
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1 Key OFF
Check fuse #27 1 OA for open
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Is fuse open7
Go to step 3
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2 Key OFF Yes S e ~ l c e GY wlre clrcult for short to ground
D~sconnect GEM module T-223 connector Replace fuse 27
Check T-223 pln 16 clrcu~t for short to ground (GY w~re) Clear DTCs and retest system
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f
Is contlnulty present?
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3 ( ~ e ~ OFF Replace electrlc shlft control module
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D~sconnect transm~ss~on select relay connector Clear all DTCs and retest
Check for contlnu~ty between plns B and E of the module
1
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(see pg J2-62)
IS cont~nulty present?
~6
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to step 4
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p -
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4 Key OFF
Measure contlnulty between GEM T-223 connector p ~ n
16 and the electrtc sh~ft control module vehlcle harness
connector p ~ n 08 (GY wlre)
connectors Clear all DTCs and retest system
Is contlnulty present?
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5 Kev OFF
~lsconnect transm~sslon select relay
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Measure reslstance between plns B and G of the module
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N~
~~~l~~~
shift control module
(see pg J2-62)
Clear all DTCs and retest system
Is reststance between 85-140 ohms?
1
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6 Key OFF
Remove transm~sson select relay
Measure voltage at p ~ n 08 (GY wlre) of the vehlcle
harness connector
Is battery voltage present?
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7 Key OFF
D~sconnect GEM T-223 connector
Remove electrlc sh~ft relay (see pg J2-62)
Check p ~ n
15
GEM module (Y wlre) vehlcle harness
connector for cont~nulty to ground
Is cont~nu~ty present?
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,
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8 I W~th the electrlc sh~ft relay removed, check for contlnu~ty
between terminals C and E (see pg J2-62) of the relay
I Is contlnu~ty present?
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9
W~th shlft relay removed, kev ON (see
pq
J2-62), check
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Yes
I S e r v o e GY wlre clrcut for short to battery Clear all
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DTCs and retest system
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to step 7 .
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Yes
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l ~ e r ~ = r e clrcu~t for short to ground
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Clear all DTCs and retest system
p p
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Replace electrlc sh~ft relay Clear all DTCs and retest
p p
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for battery voliage at DGILG w~re at the
electric
sh~ft
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/
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control module and also the electr~c shlft relay veh~cle
Serv~ce DGILG wlre clrcult for an open
harness connectors
Clear all DTCs and retest system
Is battery voltage present7
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10
Key OFF
D~sconnect transrnlsslon select relay
Remove electrlc sh~ft relay (see pg J2-62)
Check p ~ n 03 at the electrlc shlft control module (DGILG)
vehlcle harness connector for contlnu~ty to ground
Is contlnu~ty present?
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11 D~sconnect GEM T-223 connector
Remove electrlc sh~ft relay (see pg J2-62)
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Measure reslstance between GEM T-223 veh~cle
harness pin 15 (Y wrre) and the electrlc shlft relay
vehlcle harness connector (Y wlre)
Is reslstance less than 5 ohms7
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Service DGILG wlre clrcu~t for a short to ground
< e F
Clear all DTCs and retest
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No Go to step 12.
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Yes
1
Go to step 13
No Service Y wire circuit for an open.