109
SJ1044 TH, SJ1044 THS, SJ1056 TH, SJ1056 THS, SJ1256 THS
230790ABA
Electrical System Section 4 – Troubleshooting Information
8. Loose or broken 00 wire from park brake solenoid
to ground.
Check continuity. Replace if defective
9. Defective brake valve coil 3H-26.
Check continuity and resistance through coil.
Replace if defective.
4.2-5 Transmission Will Not Engage
With following conditions:
▪
Park brake will release
1. Loose or broken wire 26 from park brake switch
SW2 pin 1 to Transmission shift lever pin 8
Check continuity. Replace if defective
2. Loose or broken wire 51 from forward and reverse
solenoids to chassis harness connector P13 pin 2.
Check continuity. Replace if defective.
3. Loose or broken wire 51 from connector J13 pin 2
to brake pressure switch PS1 connector P18 pin 1.
Check continuity. Replace if defective.
4. Loose or broken 00 wire from brake pressure
switch PS1 connector P18 pin 2 to ground.
Check continuity. Replace if defective.
5. Defective pressure switch PS1
Check that switch is closed normally and opens
with 450 PSI. Replace if Defective
6. Defective transmission shifter. Replace if defective.
4.2-6 No Forward Drive.
1. Loose or broken wire 16 from shifter connector J47
pin 1 to chassis harness 31 pin connector J31 pin
1
Check continuity. Replace if defective.
2. Loose or broken wire 16 from 31 pin connector
P31 pin 1 to engine harness connector J13 pin 1.
Check continuity. Replace if defective.
3. Loose or broken wire 16 from connector P13 pin 1
to forward solenoid.
Check continuity. Replace if defective.
4. Loose or broken wire 51 from forward solenoid to
chassis harness P13 pin 2.
Check continuity. Replace if defective.
5. Defective forward solenoid. Replace solenoid.
6. Defective transmission shifter. Replace shifter
4.2-7 No Reverse Drive
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