TROUBLE DIAGNOSIS FOR SYMPTOMS
AT-613
[RE5F22A]
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Revision: November 2006 2006 Altima
DIAGNOSTIC PROCEDURE
1. CHECK MANUAL MODE SWITCH CIRCUIT
Check the manual mode switch circuit. Refer to AT-586, "
DTC P0826 MANUAL MODE SWITCH CIRCUIT" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace damaged parts.
2. CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis.
Is any malfunction detected by self-diagnostic?
YES >> Check the malfunctioning system.
NO >> INSPECTION END
A/T Does Not Shift: 5th gear → 4th gear
ECS009IW
SYMPTOM:
When shifted from 5M to 4M position in manual mode, does not downshift from 5th to 4th gear.
DIAGNOSTIC PROCEDURE
1. CHECK A/T FLUID LEVEL
Check the A/T fluid level. Refer to AT-441, "
A/T FLUID CHECK" .
OK or NG
OK >> GO TO 2.
NG >> Refill ATF.
2. CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis.
Is any malfunction detected by self-diagnostic?
YES >> Check the malfunctioning system.
NO >> GO TO 3.
3. DETECT MALFUNCTIONING ITEM
1. Control valve assembly. Refer to AT-629, "
Control Valve Assembly" .
2. Disassemble A/T. Refer to AT-643, "
DISASSEMBLY" .
3. Check the following items:
– Forward and direct clutch assembly. Refer to AT-643, "DISASSEMBLY" .
– 2nd coast brake. Refer to AT-662, "Oil Pump, 2nd Coast Brake & 2nd Brake" , AT-668, "One-Way Clutch
Outer Race Sub Assembly & 2nd Coast Brake Hub & One-Way Clutch No.1" .
– One-way clutch No.1. Refer to AT-668, "One-Way Clutch Outer Race Sub Assembly & 2nd Coast Brake
Hub & One-Way Clutch No.1" .
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4. CHECK TCM
1. Check TCM input/output signal. Refer to AT-459, "
TCM Input/Output Signal Reference Values" .
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
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