ENGINE DIAGNOSIS (RHZ ENGINE WITH TRIPLE-CONNECTOR ECM) 6-1-25
1. Double relay
2. ECM
3. Double relay fuse (30 A)
4. To radiator fan relay No.3
DTC P0215 DOUBLE RELAY CIRCUIT MALFUNCTION
WIRING DIAGRAM
DTC CONFIRMATION PROCEDURE
1) Connect scan tool to DLC with ignition switch OFF.
2) Turn ON ignition switch and clear DTC, pending DTC and freeze frame data by using scan tool.
3) Turn ON ignition switch after OFF for 5 sec.
4) Check DTC and pending DTC by using scan tool.
TROUBLESHOOTING
STEP ACTION YES NO
1 Was “ENGINE DIAG. FLOW TABLE” performed? Go to Step 2. Go to “ENGINE DIAG.
FLOW TABLE”.
2 Check Double Relay Function
1) Turn ignition switch ON for 5 sec. and then OFF.
Is click of double relay heard from double relay at
2 sec. after ignition switch OFF?
Substitute a known-
good ECM and
recheck.
Go to Step 3.
3 1) Remove ECM cover referring to “Voltage Check”
in this section.
2) Check voltage between E228-1/2 and ground.
Ignition switch ON: 10 – 14 V
Ignition switch OFF: about 0 V
Is check result as specified?
Poor E228-1/2
connection.
If connection is OK,
substitute a known-
good ECM and
recheck.
Go to Step 4.
4 Check Double Relay
1) Check double relay referring to Section 6E3.
Is it in good condition?
Go to Step 5. Faulty double relay.
5 1) Check voltage between E228-24 and ground.
Ignition switch ON: about 0 V
Ignition switch OFF: 10 – 14 V
Is check result as specified?
D Poor C51-86
connection,
D “BLU/BLK” wire
open/short or
D “WHT/GRN” wire
open/short
“YEL/GRN” wire open
or short.
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