Mazda 1990 323 Workshop Manual Supplement page 289

SELF-DIAGNOSIS FUNCTION
K2
CODE No.62 3-4 SHIFT SOLENOID VALVE
iTEP INSPECTION
ACTION
1 Are there any poor connections in 3-4 shift sole- Yes Repair connector and/or wiring
noid valve circuit?
No Go to next step
2 Does EC-AT Tester 3-4 solenoid valve lamp il- Yes 3-4 shift solenoid valve OK
luminate as shown in solenoid valve operation Cancel memory of code number
table? (Refer to page K2-117)
No Go to next step
3 Is there continuity of transistor in EC-AT control Yes Go to next step
unit?
Terminal Continuity
No
1
Replace EC-AT control unit and continue with next step
21 and IJ or 2P Yes
4 Is resistance of 3-4 shift solenoid valve OK?
Yes Go to Step 6
Terminal Resistance
D and ground 13-2752
No Go to next step
5
Are there any poor connections at connector in
Yes
Repair connector
transaxle?
No Go to next step
6
Is there continuity between terminal of EC-AT Yes Replace EC-AT control unit
control unit connector and ground?
Terminal
21 and ground
Continuity
Yes
No
Check for open circuit in wiring
03UOK2-Ot
CODE No.63 LOCKUP SOLENOID VALVE
STEP
INSPECTION ACTION
1 Are there any poor connections in lockup sole- Yes
Repair connector and/or wiring
noid valve circuit?
No Go to next step
2 Does EC-AT Tester lockup solenoid valve lamp
Yes Lockup solenoid valve OK
illuminate as shown in solenoid valve operation
Cancel memory of code number
table? (Refer to page K2-117)
No Go to next step
3 Is there continuity of transistor in EC-AT control Yes
Go to next step
I
I unit?
I I
I
Terminal Continuity
No
1
Replace EC-AT control unit then continue with next step
2K and IJ or 2P Yes
4 Is resistance of lockup solenoid valve OK?
Yes Go to Step 6
I I
Terminal Resistance
E and ground
13-27Q
- No Go to next step
5
Are there any poor connections at connector in
Yes
Repair connector
transaxle?
No
Go to next step
6 Is there continuity between terminal of EC-AT Yes
Replace EC-AT control unit
control unit connector and ground?
I II
Terminal
Continuity
No
Check for open circuit in wiring
2K and ground
Yes
K2-113