DTC 52

Inspection 4: Vehicle Speed Signal
MALFUNCTION CODE NO. 52

1. SELF-DIAGNOSIS RESULT CHECK
1. Connect CONSULT-II and CONSULT-II CONVERTER to data link connector.

NOTE: If "AIR PRESSURE MONITOR" is not indicated, go to "CONSULT-II Data Link Connector (DLC) Circuit".

2. Select "AIR PRESSURE MONITOR" on "SELECT SYSTEM" screen.
3. Select "SELF-DIAG RESULTS" on "SELECT DIAG MODE" screen.
4. Check display contents in self-diagnostic results.





Contents displayed?
No malfunction >> GO TO 3.
Malfunction in CAN communication system >> GO TO 2.

2. SYMPTOM CHECK
1. Select "CAN DIAG SUPPORT MNTR" in "DATA MONITOR" screen.





2. Select "START" and check display contents.

>> After printing the monitor items, go to "CAN System".

3. CHECK UNIFIED METER AND A/C AMP. POWER SUPPLY CIRCUIT
1. Disconnect unified meter and A/C amp. connector M56.








2. Check voltage between unified meter and A/C amp. harness connector M56 terminals 21 (R/W), 22 (G/R) and ground.
OK or NO
OK >>GO TO 4.
NO >> Check unified meter and A/C amp. power supply circuit for open or short.

4. CHECK UNIFIED METER AND A/C AMP. GROUND CIRCUIT





^ Check continuity between unified meter and A/C amp. harness connector M56 terminals 29 (B), 30 (B) and ground.





OK or NO
OK >> Check unified meter and A/C amp. self-diagnostic. Refer to "SELF-DIAGNOSTIC RESULTS" Self-Diagnostic Results Mode.
NO >> Repair or replace unified meter and A/C amp. ground circuit.