Page 622 of 1395
Electrical Troubleshooting ('98 - 00 Models)
Troubleshooting Flowchart - Shift Control Solenoid Valve A
Po$ible Caus€
'. Short or open in shift control solenoid valve A wire. Faulty 3hift control 3olenoid valvo A. Ooen in VB SOL wire
LGl
To page 14-108
(BRN/BLKILG2 (BRN/BLKI
A t32P) 8 {2sPl Ct3lPt ll Dll6Pt
LG1IBRN/BLKI LG2IBRN/BLK}
Wi16 side of femaleterminals
A (:l2Pl a t25Pl - c {31P}
. OBD ll Scan Tool indicatesCode P0753.. Self-diagnosis El or E indica-tor light blihk5 ievon times.
It the PGM Tester is available,retrieve the A"/T Freeze Data, thenclear th€ PCM.
Test drive the vehicle under thesame conditions the Freeze Data
Intermittent tailure. The systemb OX at this timo. Check the fito{ the pins in all connectora.ttected by this code.
Did the code return?
Ch6ck for a Short 1o Power:1. Turn the ignition switch OFF.2. Disconnect the B (25P) and D(16Pi connectors from thePCM,3. Turn the ignition switch ON (ll).
4. Measure the voltage betweenthe D7 and 820 or 822 terminals.
Repair short to power in the wirebetwoen tho D7 terminal and theshift control solenoid valve A.
Moasure Shift Control SolenoidValv6 A Resistanco:1. Turn the ignition switch OFF.2. [reasu re the resistancebetween the D7 and 820 or822 terminals.
ls the resistance l2 - 25 0?
To page 14-107
14-106
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Page 625 of 1395
Troubleshooting Flowchart - Shift Control Solenoid Valve B
Po3sible C.us€
.Dt. Short or oDen in shift control solenoid valve B wira' F.ulW shitt cont.ol solonoid valvc B. Opon in VB SOL wir6
LGI {8RN/BLKI
To page 14-111
PCM CONNECTOBS
LGl {BRN/BLKI LG2 {BRN/BLK}
Wire side of lemale terminals
a l32Pl B {2sPl c t3tP}
c (31P1
. OBD ll Scan Tool indicatos CodeP0758.. Self-di.gnosis E or E indica-lor lighf blinb 6ight times.
lf the PGM Tester is available.retrieve the A/f Freeze Data, thenclear the PCM.
Test-drive the vehicle under thesame conditions the Freeze Data
Intermittent failu16. Tha 3yltgmis OK at thi3 time. Check the fitof the Dins in all connectorsaffocted by this codo.
Did the code return?
Check lol o Short to Power:1. Turn the ignition switch OFF.2. Disconnect the B 125P) and D(16P) connectors from thePCM,3. Turn the ignition switch ON0ll.4. Measu.e the voltage betweenthe D2 and 820 or 822 termi-nals.
Ropair short to powor in lhe wirebetwoon the D2 termin.l .nd thoshift cont.ol solenoid vslv6 B.
Measuro Shift Control SolonoidValve I Rosbtance:1. Turn the ignition switch OFF.2. M easu re the resistancebetween tho D2 and 820 or822 terminals.
ls the resistanc€ 12 - 25 O?
To page 14-110
LG2 IBRN/BLKI
(cont'd)
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Page 628 of 1395
Electrical Troubleshooting ('98 - 00 Models)
Po$ibl€ Csuse
. Loo3€ or tauhy conn€ction batween the PCM and vehicle harness. Diaconnected countetshaft 3Deod sensor connectoa. Short or opon in countershalt spegd sensor wiro. Faulty countershatt spoed sensol
COUNTERSHAFT SPEEDS€NSOR CONNECIOR
ttt'l-T-T-
rolYILI
Terminal side of male terminals
. OgD ll Sc.n Tool indicat* Codem720.' selt-diagnosis E or E indica-tor light blinks nin6 time3.
It the PGM Tester is available,retrieve the A"/T Freeze Data, thenclear the PCM.
Test-drive the vehicle under thesame conditions the Freeze Data
Intormittent failuro. The systomis OK .t thb time. Check the Iit ofthe pins in rll connsctors .fLctodbv thi! code.
Check the countershaft speedsensor installation. and check itfor damage.
ls the countershaft speed sensorinstalled properly. and not dam-aged?Reinstall or replace and rechcck.
Measure Countershaft Sp6€dSonsoa R€sistsnc€ at the SenlorConnector:1. Disconnect the 2P connectorfrom the countershaft speed
2. Measure countershaft speedsensor resrstance at the sensorconnector.
ls the resistance 400 - 600 0?
To page 14-113
14-112
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Page 630 of 1395
Electrical Troubleshooting ('98 - 00 Modelsl
Troubleshooting Flowchart - Mainshaft Speed Sensor
Porsible Cruse
. Disconnsct€d msinsh.ft 3pood 3gnlor conncctol. Short or open in mainshaft 3poed sensor wire. Faultv mainshrtt speed sonsot
NOTE: Codo P0715 (15) on the PCM doesn't always moan there's an electricalproblem in the mainshaft or countershaft speed sensor circuit; code P07'15 (15)may also indicate a mechanical problem in the transmission. Any problem caus-ing irregular countershaft to mainshaft spoed difference can cause this codo; thiscan sometimes be seen in A'/T Free2e Data. Freeze Data can also indicate an elec-trical problem in the sensor circuits ;f one of the sensors reads 0 mph during atest dnve.
MAINSHAFT SPEEDSENSOR CONNECTOR
Terminal side of male terminals
. OBD ll Scan Tool indicat$ Codem715.. S€lf-diagnosi3 E or @ indica-tor light indicatos Code 15.
lf the PGM Tester is available,retrieve the A/f Freeze Data, thenclear the PCM.
Test-drive the vehicle under thesame conditions the Freere Data
Intermittont tailuro. Tha sy3temb OK at this tims. Check thefit oftho pins in .ll connoctoB alt6ctedbv this code.
Did the code return?
Check the mainshaft and counter-shaft speed sensors installation,and check them for damage.
Are the mainshaft and counter-shaft speed sensors installedproperly, and not damaged?Reinstall or ropllce and rochock.
Moasure Mainshatt Spe€d SenrorR€sirtanco at ths S€nsol Connoc-tor:1. Disconnect the 2P connectorfrom the mainshaft speed sensor.2. Measure mainshatt speed sen-sor resrstance at the sensorconnefior.
ls the resistance 400 600 0?
To page 14-115
14-114
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Page 635 of 1395
Troubleshooting Flowchart - Lock-up Control System
Possible Caus6
Faulty lock-up control system
. OBD ll Scan Tool indicatesCode P07,10.. selt-diagnGis El or E indica-tor light indicates Code 40.
lf the PGM Tester is available,retrieve the A/T Freeze Data, thenclear the PCM.
Test-drive the vehicle under thesame conditions the Freeze Data
lntermittent failur6. The systemis OK at this time, Check the filol the pins in all connectorsaffected bv lhis code.
Did the code return?
Check for Another Codc:Check whether the OBD ll scan toolor rhe E or E]indicator light indicates anothercode,
Perform tho TroubleshootingFlowchart for lh6 indicatedCodolll. Rechock tor code P0740(,lO) aft er troubleshooting.
Does the OBD ll scan toolor the @ or E indicatorlight indicate another code?
Test Lin€ Pres3uro:Measure the line pressure (see
page 14'161 and 14-162i.
Repair th6 hyd.aulic system asnecessary {see page 14-161 and14-152).
ls the line pressure withinthe service limit?
To page 14-120
NOTE: Do not continue this trou-bleshooting until the causes of anyother DTCS have been corrected.
(cont'd)
14-119
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Page 636 of 1395
Electrical Troubleshooting ('98 - 00 Models)
Troubleshooting Flowchart - Lock-up Control System (cont'd)
From page 14-119
Replace the Lock-up ControlSolenoid Valve A/B Assomblyand Recheck:1. Replace the lock-up controlsolenoid valve A,/B assembly(see page 14-!35).2. Turn the ignition switch OFFand reset the PCM memory byremoving the BACK UP (7.5 A)fuse in the undeFdash fuse/relay box for more than 10seconds.3. Using the scan tool, check tobe sure that the engine coolanttemperature is 176"F {80'C) orabove.4. Drive the vehicle at 55 mph(88 km/h) constantly tor morethan one minute.5. Recheck {or code P0740 (40i.
Does the OBD ll scan tool indicatecode P0740 or does the [9i] or Eindicator light indicate code 40?The system is OK at this time.
14-120
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Page 637 of 1395
Troubleshooting Flowchart - Shift Control System
Possible Cause
Faultv shift control sYstem
NOTE: Do not continue thas trou
bleshooting until the causes of any
other DTCS have been corrected.
(cont'd)
14-121
. OBD ll Scan Tool indicates
Code P0730.. Self-diagnosis Jir or E indica-
tor light indicates Code 41.
lf the PGM Tester is available,
retrieve the AJ.I Freeze Data, then
clear the PCM.
Test-drive the vehicle under the
same conditions the Freeze Data
lntermittent failure. The system
is OK at this time. Ch€ck the fit
of the pins in all connectors
atfected by this code.
Did the code return?
Check for Another Code:
Check whether the OBD ll scan
tool or the l-Drl or E] indicator
light indicates another code.
Perlorm the TroubleshootingFlowchart for the indicaled
Codets). Recheck for code P0730
{411 6ft6r troubleshooting.
Does the OBD ll scan tool
or the Da or E indicatorlighl indicate another code?
Measure Each Clutch Pressure:
Measure the 1st, 2nd, 3rd, and
4th clutch Pressure (see Page 14
161 thru 14163).
Repair the hydraulic sYstem as
necessary (se€ page 14-162 and
14-163).
ls eac h clutch Pressurewithin the service limit?
To page 14-122
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Page 638 of 1395
Electrical Troubleshooting {'gB - 00 Models}
Troubleshooting Flowchart - Shift Control System (cont,d)
From page 14 121
Replace Shilt Cont.ol SolenoidValve A$ambly and Recheck:'1. Replace the shift controlsolenoid valve A/B assembly(see page 14-136) and the lin,ear solenoid assembly (seepage 14138).2. Turn the ignition switch OFFand reset the PCM memory byremoving the BACK UP (7.5 A)tuse in the !nder-hood luse/relay box for more than 10seconos.3. Drive the vehicle at over '12
mph (20 km,/ti) in lst,2nd,3rd,and 4th gear tor more than 30seconds in E position.4. Recheck for code P0730 (41).
Does the OBD ll scan toolindicate code P0730 or doesthe E orE indicator lightindicate code 41?
Tho system is OK .l this tim€.
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