Coast Clutch Solenoid (Ccs) - 4R44E Only - Mazda B-Series 1997 Workshop Manual

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ON-BOARD DIAGNOSIS SYSTEM
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Diagnostic trouble code Coast Clutch Solenoid (CCS)-4R44E Only -
No. PI754
Note: Refer t o connector information and solenoid application chart following this test.
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INSPECTION ACTION
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p p
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sure transmission harness is fully seated, terml- -i~es
Remain ~n OUTPUT TEST MODE
In connector and in good cond~tlon before
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Go to step 2
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Using
NGS
Tester, perform KOEO self-test
Select ACTIVE COMMANDS and enter OUTPUT TEST MODE
~ ~ c ~ d u r e d u r e I e l f v e h l e zsnotenter
Select ALL ON mode
Push START to turn outputs ON and STOP to turn outputs OFF I
OUTPUT TEST MODE, go to page FT-131
Does vehlcle enter OUTPUT TEST MODE?
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Caution
Do not pry up on connector. Depress release button then
pull up on connector.
Disconnect 16-pin transmission vehicle harness connector.
Using a mirror, inspect both ends of connector for damaged or
pushed out pins, corrosion, loose wires and missing or damaged
seals.
Using voltmeter, connect positive lead to VPWR terminal and
negative lead to solenoid circuit of transmission vehicle harness
connector.
Using NGS tester, enter OUTPUT TEST MODE. Press START
and STOP to cycle solenoid output ON and OFF while observing
voltmeter.
Does suspect solenoid output voltage change at least 0.5 volts?
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Yes Go to step 5.
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No Go to step 3.
Key OFF.
Ensure transmission vehicle harness connector is disconnected.
Disconnect PCM and install 104-pin breakout box (BOB).
Measure resistance between test pin 28 at BOB and appropriate
signal pin at transmission connector.
Measure resistance between test pins 71 197 at BOB and appropri-
ate signal pins at transmission connector.
Is each resistance less than 5 ohms?
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Key OFF, BOB is installed.
Ensure transmission vehicle harness connector and PCM are
disconnected.
Measure resistance between test pln 28 and test pins 71/97 at
BOB and chassis ground.
Is each resistance greater than 10,000 ohms?
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Reconnect PCM.
Install transmission tester. K-74
Perform solenoid function test. K-78
Does solenoid activate (LED green)?
Yes Go to step 4.
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No Serv~ce open clrcults Go to step 14
Yes Go to step 5
No Serv~ce short clrcuit. Go to step 14
Yes Go to step 6.
No Go to step 7
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Perform transmission drlve test K-78 Yes Replace PCM Go to step 14
Does CCS actlvate when commanded by tester? -
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Does englne braklng occur?
No Go to step 7
Does coast clutch engage?
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Check for continuity between BAT- (englne ground) and
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appropriate jack with an ohmmeter.
For CCS test, use CCS or VPWR jack
Connection should show infinite resistance (no continuity)
Is there continuity?
Using transrnlsslon tester Yes Go to step 8
Set MODE swltch to BENCH
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Rotate GEAR SELECTOR sw~tch to OHMS CHECK
Connect negatlve lead of ohmmeter to CCS jack and posltlve
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No Note
lead to VPWR jack
Internal harness or solenoid concerns may
cause reading out of specification.
Resistance should be between 22 to 48 ohms
Is resistance withln speclflcatlon?
Go to step 9
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Yes Go to step 9
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Refer to Qulck D~agnosls Chart In thls sectlon to
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diagnose torque converter concerns
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Drain fluid and remove fluid pan.
Caution
Use only MerconmV ATF or equivalent. Use of any other
fluids may result i n
a
transmission malfunction or failure.
Check internal harness connector is fully engaged on CSS.
Check internal harness connector terminals are fully seated in
connector.
Inspect connector for damage.
Is everything OK?
Yes Go to step 10
No Service as required.