Self-Diagnostic Test Procedure (F4A20 Series)

Connect voltmeter to diagnostic connector terminal No. 10 and ground connector No. 12. See Figure . Turn the ignition switch to the ON position, and TCU memory contents will start immediately. Obtain the fault code(s) and refer to the descriptions in both FAULT CODE IDENTIFICATION and FAIL-SAFE CODE IDENTIFICATION .

FAULT CODE IDENTIFICATION

DTC	Condition
11	Abnormal Increase Of TPS Output
12	Abnormal Decrease Of TPS Output
13	Incorrect Adjustment Of TPS System
15	Open Circuit Of Low Oil Temperature Sensor Circuit
16	Short Circuit Of High Oil Temperature Sensor Circuit
17	Open Circuit Of High Oil Temperature Sensor Circuit
21	Open Circuit Of Kickdown Servo Switch Circuit
22	Short Circuit Of Kickdown Servo Switch Circuit
23	No Ignition Pulse Pick-Up Signal
24	Misadjustment Or Short Circuit Of Accelerator Switch
31	No Pulse Generator "A" Signal
32	No Pulse Generator "B" Signal
41	Open Circuit Of Shift Control Solenoid Valve "A"
42	Short Circuit Of Shift Control Solenoid Valve "A"
43	Open Circuit Of Shift Control Solenoid Valve "B"
44	Short Circuit Of Shift Control Solenoid Valve "B"
45	Open Circuit Of Pressure Control Solenoid Valve
46	Short Circuit Of Pressure Control Solenoid Valve
47	Open Circuit Of Damper Clutch Control Solenoid Valve
48	Short Circuit Of Damper Clutch Control Solenoid Valve
49	Malfunction Of Damper Clutch System
51	1st Gear Non-Synchronous - Pulse Generator(s) Or Kickdown Brake
52	2nd Gear Non-Synchronous - Pulse Generator "A" Or Kickdown Brake
53	3rd Gear Non-Synchronous - Pulse Generator(s) Or Front Or Rear Clutch
54	4th Gear Non-Synchronous - Pulse Generator "A" Or Kickdown Brake

FAIL-SAFE CODE IDENTIFICATION

DTC	Condition
81	Open Circuit Of Pulse Generator "A"
82	Open Circuit Of Pulse Generator "B"
83	Shift Control Solenoid Valve "A" Short Circuit
84	Shift Control Solenoid Valve "B" Short Circuit
85	Pressure Control Solenoid Valve Circuit Failure
86	Shift Steps Non-Synchronous