Contents Wiring diagrams Section: Transfer Case All sections

Transfer Case (VF4AM, VF4BM): Other Toyota 4Runner IV

Transfer Case 1 illustration ~635 words

PRECAUTION

  1. Before disassembly, clean the transfer assy and remove any deposited sand or mud to prevent it from entering the inside of the transfer during disassembly and assembly.
  2. When removing any light alloy part such as a transfer cover, do not pry it off with a tool like a screwdriver but tap it out with a plastic hammer.
  3. Always organize the removed parts properly and protect them away from dust.
  4. After cleaning and drying completely before installation, apply hypoid gear oil to each part. Do not use alkaline chemicals when cleansing aluminum or rubber parts and ring gear set bolts. Also, do not use any cleansing oil (ex. white gasoline) to clean the rubber parts such as oil seals.
  5. Sufficiently apply hypoid gear oil to any sliding surface or rotating part.
  6. Do not directly hold a part by vise. Make sure to put an aluminum sheet between them.
  7. Replace any damaged or deformed snap ring with new one.
  8. If mating surface of the case is scratched, it may cause oil leakage. Therefore, carefully avoid such damage when handling.
  9. Using a razor blade and gasket scraper, remove old FIPG from seal surface.
  10. Clean all the components to remove the redundant FIPG completely.
  11. Clean sealing surface with solvent so that any residue does not remain on the seal surface.
  12. Apply FIPG in an approx. 1.2 mm (0.047 in.) diameter of bead state along the sealing surface.
  13. Be sure to assemble parts within 10 minutes of application. Otherwise, the FIPG must be removed and reapplied.
  14. Do not fill oil immediately after installing sealed parts. Leave it 1 hour or more.
  15. Scratches on the contact surface with an oil seal or gasket may result in oil leakage. Handle with care to prevent such damage.
  16. When press-fitting an oil seal, take care to prevent the oil seal lip and its periphery from being damaged.
  1. Before disassembly, clean the transfer assy and remove any deposited sand or mud to prevent it from entering the inside of the transfer during disassembly and assembly.
  2. When removing any light alloy part such as a transfer cover, do not pry it off with a tool like a screwdriver but tap it out with a plastic hammer.
  3. Always organize the removed parts properly and protect them away from dust.
  4. After cleaning and drying completely before installation, apply hypoid gear oil to each part. Do not use alkaline chemicals when cleansing aluminum or rubber parts and ring gear set bolts. Also, do not use any cleansing oil (ex. white gasoline) to clean the rubber parts such as oil seals.
  5. Sufficiently apply hypoid gear oil to any sliding surface or rotating part.
  6. Do not directly hold a part by vise. Make sure to put an aluminum sheet between them.
  7. Replace any damaged or deformed snap ring with new one.
  8. If mating surface of the case is scratched, it may cause oil leakage. Therefore, carefully avoid such damage when handling.
  9. Using a razor blade and gasket scraper, remove old FIPG from seal surface.
  10. Clean all the components to remove the redundant FIPG completely.
  11. Clean sealing surface with solvent so that any residue does not remain on the seal surface.
  12. Apply FIPG in an approx. 1.2 mm (0.047 in.) diameter of bead state along the sealing surface.
  13. Be sure to assemble parts within 10 minutes of application. Otherwise, the FIPG must be removed and reapplied.
  14. Do not fill oil immediately after installing sealed parts. Leave it 1 hour or more.
  15. Scratches on the contact surface with an oil seal or gasket may result in oil leakage. Handle with care to prevent such damage.
  16. When press-fitting an oil seal, take care to prevent the oil seal lip and its periphery from being damaged.

STANDARD VALUE OF ECU TERMINAL

Terminals (Symbols)ConditionSTD Voltage (V)
26 (SPD) - 7 (GND)During drivingPulse generation
48 (N) - 7 (GND)Ignition switch ON Transmission shift lever other position --> Transmission shift lever N position10 - 14 --> 2 or less
33 (DL) - 7 (GND)Ignition switch ON Differential lock switch is in "OFF" position --> Keep pressing the differential lock switch approx. 2 seconds to turn it ON10 - 14 --> 2 or less
39 (TL3) - 7 (GND)Ignition switch ON Differential lock switch is in "OFF" position --> Keep pressing the differential lock switch approx. 2 seconds to turn it ON2 or less --> 10 - 14
12 (IG) - 7 (GND)Ignition switch ON10 - 14
2 (TM1) - 5 (TM2)Ignition switch ON Differential lock switch is in "OFF" position10 - 14 (for about 5 seconds) then less than 0.5
Ignition switch ON Keep pressing the differential lock switch approx. 2 seconds to turn it ON
32 (LO) - 7 (GND)Ignition switch ON Four wheel drive control switch "H4" position --> Four wheel drive control switch "L4" position10 - 14 --> 2 or less
46 (IND2) - 7 (GND)Ignition switch ON Differential lock switch is in "OFF" position --> Keep pressing the differential lock switch approx. 2 seconds to turn it ON10 - 14 --> 1.5 - 3.5
28 (IND3) - 7 (GND)Ignition switch ON Four wheel drive control switch "H4" position --> Four wheel drive control switch "L4" position10 - 14 --> 1.5 - 3.5
40 (TL2) - 7 (GND)Ignition switch ON Differential lock switch is in "OFF" position --> Keep pressing the differential lock switch approx. 2 seconds to turn it ON10 - 14 --> 2 or less
7 (GND) - Body groundIgnition switch OFFContinuity
50 (L4) - 7 (GND)Ignition switch ON Four wheel drive control switch "H4" position --> Four wheel drive control switch "L4" position10 - 14 --> 2 or less
1 (HM1) - 7 (GND)Ignition switch ON Four wheel drive control switch "H4" position --> Four wheel drive control switch "L4" position10 - 14 --> 2 or less
4 (HM2) - 7 (GND)Ignition switch ON Four wheel drive control switch "H4" position --> Four wheel drive control switch "L4" position2 or less --> 10 - 14
23 (HL1) - 7 (GND)Ignition switch ON Four wheel drive control switch "H4" position --> Four wheel drive control switch "L4" position10 - 14 --> 2 or less
42 (HL2) - 7 (GND)Ignition switch ON Four wheel drive control switch "H4" position --> Four wheel drive control switch "L4" position2 or less --> 10 - 14

TERMINALS (SYMBOLS) CHART

Scheme 242

Scheme 242: LOCATION
Terminals (Symbols)ConditionSTD Voltage (V)
1 (HM1)-4 (HM2)Ignition switch ON Four wheel drive control switch "H4" position --> Four wheel drive control switch "L4" position10-14 <=> 2 or less or 0 (0.5 s)-14 (50 ms) pulse generation
4 (HM2)-1 (HM1)Ignition switch ON Four wheel drive control switch "L4" position --> Four wheel drive control switch "H4" position
2 (TM1)-5 (TM2)Ignition switch ON Differential lock switch is in "OFF" position Four wheel drive control switch "H2" position --> Four wheel drive control switch "H4" position10 - 14 <=> 2 or less or 0 (0.5 s)-14 (50 ms) pulsegeneration
5 (TM2)-2 (TM1)Ignition switch ON Keep pressing the differential lock switch approx. 2 seconds to turn it ON Four wheel drive control switch "H4" position or "L4" position --> Four wheel drive control switch "H2" position
3 (DM1)-6 (DM2)Ignition switch ON A.D.D. FREE <=> A.D.D. LOCK10-14 <=> 2 or less or 0 (0.5 s)-14 (50 ms) pulsegeneration
6 (DM2)-3 (DM1)Ignition switch ON A.D.D. LOCK <=> A.D.D. FREE
4 (HM2)-7 (GND)Ignition switch ON Four wheel drive control switch "H4" position --> Four wheel drive control switch "L4" position2 or less <=> 10-14
7 (GND) - Body groundIgnition switch OFFContinuity
12 (IG)-7 (GND)Ignition switch ON10-14
18 (DL2)-7 (GND)Ignition switch ON A.D.D. LOCK <=> A.D.D. FREE2 or less <=> 10-14
19 (DL1)-7 (GND)Ignition switch ON A.D.D. FREE <=> A.D.D. LOCK2 or less <=> 10-14
23 (HL1)-7 (GND)Ignition switch ON Four wheel drive control switch "H4" position --> Four wheel drive control switch "L4" position10-14 <=> 2 or less
25 (2-4)-7 (GND)Ignition switch ON Four wheel drive control switch "L4" position --> Four wheel drive control switch "H2" position or "H4" position10-14 <=> 2 or less
26 (SPD)-7 (GND)During drivingPulse generation
28 (IND3)-7 (GND)Ignition switch ON Four wheel drive control switch "H2" position --> Four wheel drive control switch "L4" position10-14 <=> 0-3.5
32 (LO)-7 (GND)Ignition switch ON Four wheel drive control switch "H2" position --> Four wheel drive control switch "L4" position10-14 <=> 2 or less
33 (DL)-7 (GND)Ignition switch ON Differential lock switch is in "OFF" position --> Keep pressing the differential lock switch approx. 2 seconds to turn it ON10-14 <=> 2 or less
34 (ADD)-7 (GND)Ignition switch ON A.D.D. FREE <=> A.D.D. LOCK10-14 <=> 2 or less
39 (TL3)-7 (GND)Ignition switch ON Four wheel drive control switch "H2" position --> Four wheel drive control switch "L4" position Differential lock switch is in "OFF" position --> Keep pressing the differential lock switch approx. 2 seconds to turn it ON2 or less <=> 10-14
40 (TL2)-7 (GND)Ignition switch ON Four wheel drive control switch "H2" position --> Four wheel drive control switch "H4" position Differential lock switch is in "OFF" position --> Keep pressing the differential lock switch approx. 2 seconds to turn it ON10-14 <=> 2 or less
41 (TL1)-7 (GND)Ignition switch ON Four wheel drive control switch "H2" position --> Four wheel drive control switch "H4" position or "L4" position Differential lock switch is in "OFF" position --> "ON" position2 or less <=> 10-14
42 (HL2)-7 (GND)Ignition switch ON Four wheel drive control switch "H4" position --> Four wheel drive control switch "L4" position2 or less <=> 10-14
45 (IND1)-7 (GND)Ignition switch ON Four wheel drive control switch "H2" position --> Four wheel drive control switch "H4" position or "L4" position10-14 <=> 0-3.5
46 (IND2)-7 (GND)Ignition switch ON Differential lock switch is in "OFF" position --> Keep pressing the differential lock switch approx. 2 seconds to turn it ON10-14 <=> 0-3.5
48 (N)-7 (GND)Ignition switch ON Transmission shift lever other position --> Transmission shift lever N position2 or less <=> 10-14
50 (L4)-7 (GND)Ignition switch ON Four wheel drive control switch "H4" position --> Four wheel drive control switch "L4" position10-14 <=> 2 or less

TERMINALS (SYMBOLS) CHART