DIAGNOSIS
TSB Revision
ELECTRONIC CONTROL AWD
27C-27
STEP 6. Resistance measurement between electronic
control coupling solenoid connector (coupling side)
terminals
Disconnect the D-119 connector, and measure the resistance
value between the connector terminals on the electronic control
coupling side.
Standard value: 2.2
− 4.0 Ω
Q: Is the measured resistance value within the standard
value range?
YES : Go to Step 7.
NO : Replace the electronic control coupling (Refer to
P.27C-97
). Then go to Step 11.
STEP 7. Voltage measurement at the AWD-ECU connector
(1) Disconnect the C-128 AWD-ECU connector.
(2) Measure the voltage between the C-128 wiring harness
side connector terminals No.3, No.4 (Ignition switch "ON")
and the body ground.
OK: System voltage
Q: Is the check result normal?
YES : Go to Step 8.
NO : Go to Step 9.
STEP 8. Wiring harness check
Check the wiring harness between the C-128 AWD-ECU con-
nector (terminal No.10) and the body ground for damage or
other problem.
Q: Is the wiring harness in good condition?
YES : Go to Step 10.
NO : Repair the wiring harness. Then go to Step 11.
STEP 9. Wiring harness check
NOTE: Prior to the wiring harness inspection, check the C-309
and C-315 ETACS-ECU connector, and repair if necessary.
Check the wiring harness between the C-128 AWD-ECU con-
nector (terminal No.3) and the fusible link No. 34, and the wir-
ing harness between the C-128 AWD-ECU connector [terminal
No.4 (ignition switch "ON")] and the fusible link No. 34 for dam-
age or other problem.
Q: Is the wiring harness in good condition?
YES : Go to Step 10.
NO : Repair the wiring harness. Then go to Step 11.