Page 449 of 2389

TROUBLESHOOTING FLOW±CHART (A540E)
HINT:
wIf diagnostic code Nos. 42, 61, 62 or 63 are output, the overdrive OFF indicator light will begin to
blink immediately to warn the driver. However, an impact or shock may cause the blinking to stop;
but the code will still be retained in the Engine and ECT ECU memory until canceled out.
wThere is no warning for diagnostic code No. 64.
wIn the event of a simultaneous malfunction of both No. 1 and No. 2 speed sensors, no diagnostic
code will appear and the fail±safe system will not function. However, when driving in the D range,
the transaxle will not up±shift from first gear, regardless of the vehicle speed.
Check continuity between Engine and ECT
ECU connector SP, terminal and body ground.
(See page AT±216)
Check continuity between Engine and ECT
ECU connector SP2 terminal and body ground.
(See page AT±216)
1. Diagnostic code 42 (No. 1 speed sensor circuitry)
Check wiring between Engine and ECT ECU
and No. 2 speed sensor. Check wiring between Engine and ECT ECU
and combination meter.
2. Diagnostic code 61 (No. 2 speed sensor circuitry)
Check No. 2 speed sensor.
(See page AT±234) Substitute another Engine and ECT ECU.
Substitute another Engine and ECT ECU.Repair or replace No. 1 speed sensor.
Repair or replace No. 2
speed sensor. Check No. 1 speed sensor.
± AUTOMATIC TRANSAXLETroubleshooting (Diagnosis System) (A540E and A540H)AT±194
Page 450 of 2389

Remove the oil pan and check resistance of
No. t solenoid valve connector and body ground.
Resistance: 11 ± 1 S
Remove the oil pan and check resistance of lock±
up solenoid valve connector and body ground.
Resistance: 11 ± 15 Remove the oil pan and check resistance of
No. 2 solenoid valve connector and body ground.
Resistance: 11 ± 15
Check resistance of lock±up solenoid valve at
Engine and ECT ECU connector.
(See page AT±216) Check resistance of No. 2 solenoid valve at
Engine and ECT ECU connector.
(See page AT±216) Check resistance of No. 1 solenoid valve at
Engine and ECT ECU connector
(See page AT±216)
Replace No. 1 and No. 2 solenoid
valves.
HINT: No. 1 and No. 2 solenoid valves
make a set.Replace No. 1 and No. 2 solenoid
valves.
HINT: No. 1 and No. 2 solenoid valves
make a set.
Check wiring between lock±up solenoid valve and
Engine and ECT ECU.Check wiring between No. 2 solenoid valve and
Engine and ECT ECU.Check wiring between No. 1 solenoid valve and
Engine and ECT ECU.
5. Diagnostic code 64 (Lock±up solenoid valve circuitry)3. Diagnostic code 62 (No. 1 solenoid valve circuitry)
4. Diagnostic code 63 (No. 2 solenoid valve circuitry)
Substitute another Engine and ECT ECU.
Substitute another Engine and ECT ECU.Substitute another Engine and ECT ECU.
Replace lock±up solenoid valve.
± AUTOMATIC TRANSAXLETroubleshooting (Diagnosis System) (A540E and A540H)AT±195
Page 451 of 2389

TROUBLESHOOTING FLOW±CHART (A540H)
HINT:
wIf diagnostic code Nos. 44, 61, 62, 63, 73 or 74 are output, the overdrive OFF indicator light will
begin to blink immediately to warn the driver.
However, an impact or shock may cause the blinking to stop; but the code will still be retained in
the ECT ECU memory until canceled out.
wThere is no warning for diagnostic code No. 64.
wIn the event of a simultaneous malfunction of both vehicle and rear speed sensors, no diagnostic
code will appear and the fail±safe system will not function. However, when driving in the D range,
the transaxle will not up±shift from first gear, regardless of the vehicle speed.
1. Diagnostic code 44 (Rear speed sensor circuitry)
Check continuity between ECT ECU NC
Check continuity between ECT ECU
connector RR+ terminal and RR± terminal.
(See page AT±217)
Check continuity between ECT ECU
connector FR+ terminal and FR± terminal.
(See page AT±217)
Check wiring between ECT ECU and vehicle
speed sensor. Check wiring between ECT ECU and rear
wheel speed sensor.
2. Diagnostic code 61 (Vehicle speed sensor circuitry)Repair or replace rear wheel speed
sensor. Check rear wheel speed sensor.
(See page AT±221)
Check vehicle speed sensor.
(See page AT±221)Repair or replace vehicle
speed sensor. Substitute another ECT ECU. Substitute another ECT ECU.
± AUTOMATIC TRANSAXLETroubleshooting (Diagnosis System) (A540E and A540H)AT±196
Page 452 of 2389

Remove the oil pan and check resistance of lock±
up solenoid valve connector and body ground.
Resistance: 11 ± 15 W Remove the oil pan and check resistance of
No. 2 solenoid valve connector and body ground.
Resistance: 11 ± 15 W Remove the oil pan and check resistance of
No. 1 solenoid valve connector and body ground.
Resistance: 11 ± 15
5. Diagnostic code 64 (Lock±up solenoid valve circuitry)4. Diagnostic code 63 (No. 2 solenoid valve circuitry)3. Diagnostic code 62 (No. 1 solenoid valve circuitry)
Replace No. 1 and No. 2 solenoid
valves.
HINT: No. 1 and No. 2 solenoid valves
make a set.Replace No. 1 and No. 2 solenoid
valves.
HINT: No. 1 and No. 2 solenoid
valves make a set
Check resistance of lock±up solenoid valve at
ECT ECU connector. (See page AT±219) Check resistance of No. 1 solenoid valve at
ECT ECU connector. (See page AT±219)
Check resistance of No. 2 solenoid valve at
ECT ECU connector. (See page AT±219)
Check wiring between lock±up solenoid valve and
ECT ECU.Check wiring between No. 1 solenoid valve and
ECT ECU.
Check wiring between No. 2 solenoid valve and
ECT ECU.
Replace lock±up solenoid valve. Substitute another ECT ECU.
Substitute another ECT ECU.
Substitute another ECT ECU.
± AUTOMATIC TRANSAXLETroubleshooting (Diagnosis System) (A540E and A540H)AT±197
Page 453 of 2389

6. Diagnostic code 73 (No. 1 center differential control solenoid valve circuitly)
Replace No. 1 and No. 2 center differ-
ential control solenoid valves.
HINT: No. 1 and No. 2 center differen-
tial control solenoid valves make a
set. Check resistance of No. 2 center differential con-
trol solenoid valve connector and body ground.
Resistance: 11 ± 15 Check resistance of No. 1 center differential control
solenoid valve connector and body ground.
Resistance: 11 ± 15 WReplace No. 1 and No. 2 center differ-
ential control solenoid valves.
HINT: No. 1 and No. 2 center differen-
tial control solenoid valves make a
set.
Check resistance of No. 2 center differential control
solenoid valve at ECT ECU connector.
(See page AT±219) Check resistance of No. 1 center differential control
solenoid valve at ECT ECU connector.
(See page AT±219)
7. Diagnostic code 74 (No. 2 center differential control solenoid valve circuitly)
Check wiring between No. 2 center differential con-
trol solenoid valve and ECT ECU. Check wiring between No. 1 center differential con-
trol solenoid valve and ECT ECU. Substitute another ECT ECU.
Substitute another ECT ECU.
± AUTOMATIC TRANSAXLETroubleshooting (Diagnosis System) (A540E and A540H)AT±198
Page 454 of 2389

Preliminary Check
1. CHECK TRANSAXLE FLUID LEVEL
HINT:
The vehicle must have been driven so that the engine
and transaxle are at normal operating temperature.
(Fluid temperature: 158 ± 176
°F or 70 ± 80°C)
(a) Park the vehicle on a level surface, set the parking brake.
(b) With the engine idling, shift the shift lever into all
positions from P to L position and return to P position.
HINT: Depress the brake pedal.
(e) Pull out the transaxle dipstick and wipe it clean.
(d) Push it back fully into the tube.
(e) Pull it out and check that the fluid level is in the HOT
range.
If the level is at the low side, add fluid.
Fluid type: A540E ATF DEXRON II
A540H ATF Type T (08886±00405) or equivalent
NOTICE: Do not overfill.
2. (A540H)
CHECK TRANSFER OIL LEVEL
(a) Park the vehicle on a level surface, set the parking brake.
(b) Pull out the transfer dipstick and wipe it clean.
(e) Push it back fully into the tube.
(d) Pull it out and check the oil level as shown in the illustra-
tion.
Oil type: Transaxle oil E50 (08885±80206), AP GL5,
SAE 75W ± 90 or equivalent
NOTICE: Do not overfill.
± AUTOMATIC TRANSAXLETroubleshooting (Preliminary Check) (A540E and A540H)AT±199
Page 455 of 2389

Capacity:
Dry fill: 7.0 liter (7.4 US qts, 6.2 Imp. qts)
Drain and refill:
3.3 liter (3.5 US qts, 2.9 Imp. qts)
(d) Start the engine and shift the selector into all positions
from P through L and then shift into P.
(e) With the engine idling, check the fluid level. Add fluid
up to the COOL level on the dipstick.
(f) Check the fluid level with the normal fluid temperature
(158 ± 1765 F or 70 ± 805C) ±and add as
necessary.
NOTICE: Do not overfill.
5. (A540H)
REPLACE TRANSFER OIL
(a) Remove the drain plug and drain the oil.
(b) Install the drain plug.
(e) Add new oil through the filler tube.
SST 09043±38100
Oil type: Transaxle oil E50 (08885±80206) or
equivalent
Recommended oil:
Oil grade API GL±5
Viscosity SAE 75W ± 90 or 80W ± 90
Above ±18
°C (0°F) SAE 90W
below ±18°C (0°F) SAE 80W
NOTICE: 0.7 liter (0.74 US qts, 0.62 Imp. qts)
(d) Check the oil level and add as necessary.
NOTICE: Do not overfill.
3. CHECK FLUID CONDITION
If the fluid smells burnt or is black, replace it.
4. REPLACE TRANSAXLE FLUID
NOTICE: Do not overfill.
(a) Remove the drain plug and drain the fluid.
(b) Install the drain plug.
(c) Add new fluid through the filler tube.
SST 09043±38100
(A540E)
Fluid type: ATF DEXRON ll
Capacity:
Dry fill: 5.9 liters (6.2 US qts, 5.2 Imp. qts)
Drain and refill:
2.5 liters (2.6 US qts, 2.2 Imp. qts)
(A540H)
Fluid type: ATF Type T (08886±00405) or
equivalent
± AUTOMATIC TRANSAXLETroubleshooting (Preliminary Check) (A540E and A540H)AT±200
Page 456 of 2389

S. INSPECT AND ADJUST THROTTLE CABLE
(a) Depress the accelerator pedal all the way and check that
the throttle valve opens fully.
HINT: If the valve does not open fully, adjust the accelera-
tor cable.
(b) Fully depress the accelerator pedal.
(c) Measure the distance between the end of the boot and
stopper on the cable.
Standard distance: 0 ± 1 mm (0 ± 0.04 in.)
If the distance is not standard, adjust the cable by the ad-
justing nuts.
7. INSPECT AND ADJUST SHIFT CABLE
When shifting the shift lever from the ±N position to other
positions, check that the lever can be shifted smoothly and
accurately to each position and that the position indicator
correctly indicates the position.
If the indicator is not aligned with the correct position, carry
out the following adjustment procedures.
(a) Loosen the swivel nut on manual shift lever.
(b) Push the manual lever fully toward the right side of the ve-
hicle.
(c) Return the lever two notches to NEUTRAL position.
(d) Set the shift lever to N.
(e) While holding the lever lightly toward the R range side,
tighten the swivel nut.
8. ADJUST NEUTRAL START SWITCH
If the engine will start with the shift selector in any range
other than N or P range, adjustment is required.
(a) Loosen the neutral start switch bolts and set the shift se-
lector to the N range.
(b) Align the groove and neutral basic line.
(c) Hold in position and tighten the bolts.
Torque: 55 kg±cm (48 in.±lb, 5.4 N±m)
9. INSPECT IDLE SPEED IN RANGE)
Idle speed: 700 rpm
± AUTOMATIC TRANSAXLETroubleshooting (Preliminary Check) (A540E and A540H)AT±201