Infiniti QX4 (R50). Manual — part 579
5
CHECK INPUT SIGNAL
Without CONSULT-II
1. Turn ignition switch to “OFF” position.
2. Operate 4WD shift switch and check continuity between the following terminals.
Continuity:
Terminal 40 (ATP switch) and body ground
“4H” position: No continuity should exist.
Between “4H” and “4LO”: Continuity should exist.
“4LO” position: No continuity should exist.
Terminal 25 (Neutral-4LO switch) and body ground
“4H” position: No continuity should exist.
“4LO” position: Continuity should exist.
Terminal 43 (Wait detection switch) and body ground
“4H” position: No continuity should exist. (*1)
“4LO” position: Continuity should exist.
*1: After setting from “4LO” to “4H”, continuity exists while “Wait” function is operating in “4H” position.
(No continuity exists when “Wait” function is canceled.)
SMT787D
SMT849D
OK or NG
OK
©
GO TO 6.
NG
©
Check the following.
I
Harness continuity between transfer switch assembly sub-harness connector and
transfer control unit
I
Continuity between transfer switch assembly sub-harness connector and body ground
ATP SWITCH, WAIT DETECTION SWITCH AND NEUTRAL-4LO SWITCH
Diagnostic Procedure (Cont’d)
TF-78
6
PERFORM SELF-DIAGNOSIS AGAIN
After driving for a while, perform self-diagnosis again.
Refer to “Trouble Diagnosis without CONSULT-II”, TF-27.
OK or NG
OK
©
INSPECTION END
NG
©
1. Perform transfer control unit input/output signal inspection. Refer to “TRANSFER
CONTROL UNIT INSPECTION TABLE”, “TROUBLE DIAGNOSIS — GENERAL
DESCRIPTION”, TF-55.
2. If NG, recheck transfer control unit pin terminals for damage or loose connection with
harness connector.
GI
MA
EM
LC
EC
FE
AT
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
ATP SWITCH, WAIT DETECTION SWITCH AND NEUTRAL-4LO SWITCH
Diagnostic Procedure (Cont’d)
TF-79
Diagnostic Procedure
NBTF0025
1
CHECK MALFUNCTION
Is this malfunction detected only while driving in reverse?
Yes or No
Yes
©
CHECK A/T PNP SWITCH “R” POSITION.
Refer to AT-99, “DTC P0705 Park/Neutral Position Switch”.
No
©
GO TO 2.
2
CHECK OTHER MALFUNCTION
Are other malfunctions also detected by self-diagnosis and CONSULT-II?
Refer to “Trouble Diagnosis without CONSULT-II”, TF-27 and “Trouble Diagnosis with CONSULT-II”, TF-30.
Yes or No
Yes
©
CHECK FOR OTHER MALFUNCTIONS.
(When other malfunctions are eliminated, clutch pressure switch malfunction display may
disappear.)
No
©
GO TO 3.
3
CHECK 2-4WD SHIFT SOLENOID VALVE AND 4WD SHIFT SWITCH CIRCUITS
Check 2-4WD shift solenoid valve and 4WD shift switch circuits.
OK or NG
OK
©
GO TO 4.
NG
©
Check, repair or replace faulty parts.
4
CHECK INPUT SIGNAL
WITH CONSULT-II
©
GO TO 5.
WITHOUT CONSULT-II
©
GO TO 6.
CLUTCH PRESSURE SWITCH
Diagnostic Procedure
TF-80
5
CHECK INPUT SIGNAL
With CONSULT-II
1. Turn ignition switch to “ON” position.
2. Select “ECU INPUT SIGNALS” in Data Monitor.
3. Read out ON/OFF status of “CL PRES SW”.
SMT788D
SMT977D
OK or NG
OK
©
GO TO 7.
NG
©
Check the following.
I
Continuity between transfer control unit and transfer terminal cord assembly sub-har-
ness connector
I
Transfer sub-harness
I
Clutch pressure switch
Refer to “4WD Solenoid Valve, Clutch Pressure Switch and Line Pressure Switch”,
“COMPONENT INSPECTION”, TF-111.
GI
MA
EM
LC
EC
FE
AT
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
CLUTCH PRESSURE SWITCH
Diagnostic Procedure (Cont’d)
TF-81
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст