Infiniti G20 (P11). Manual — part 224
PROCEDURE B
=NCEC0511S02
1
CHECK COOLING FAN POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect cooling fan relays-2 and -3.
3. Turn ignition switch “ON”.
4. Check voltage between cooling fan relays-2 and -3 terminals 1, 3 and ground with CONSULT-II or tester.
SEF593X
OK or NG
OK
©
GO TO 3.
NG
©
GO TO 2.
2
DETECT MALFUNCTIONING PART
Check the following.
I
Harness for open or short between cooling fan relays-2 and -3 and fuse
I
Harness for open or short between cooling fan relays-2 and -3 and fusible link
©
Repair harness or connectors.
3
CHECK COOLING FAN MOTOR CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect cooling fan motor-1 harness connector and cooling fan motor-2 harness connector.
3. Check harness continuity between cooling fan relay-2 terminal 5 and cooling fan motor-1 terminal 2, cooling fan relay-2
terminal 6 and cooling fan motor-1 terminal 3, cooling fan relay-2 terminal 7 and body ground. Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
5. Check harness continuity between cooling fan relay-3 terminal 5 and cooling fan motor-2 terminal 2, cooling fan relay-3
terminal 6 and cooling fan motor-2 terminal 3, cooling fan relay-3 terminal 7 and body ground. Refer to Wiring Diagram.
Continuity should exist.
6. Also check harness for short to ground and short to power.
OK or NG
OK
©
GO TO 4.
NG
©
Repair open circuit or short to ground or short to power in harness or connectors.
4
CHECK COOLING FAN OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 12 and cooling fan relay-2 terminal 2, cooling fan relay-3 terminal 2.
Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK
©
GO TO 6.
NG
©
GO TO 5.
GI
MA
EM
LC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0217 COOLANT OVERTEMPERATURE ENRICHMENT PROTECTION
Diagnostic Procedure (A/T Models) (Cont’d)
EC-307
5
DETECT MALFUNCTIONING PART
Check the following.
I
Harness connectors E75, M6
I
Harness connectors M49, F23
I
Harness for open or short between cooling fan relays-2 and -3 and ECM
©
Repair open circuit or short to ground or short to power in harness or connectors.
6
CHECK COOLING FAN RELAYS-2 AND -3
Check continuity between cooling fan relay-2, -3 terminals 3 and 5, 6 and 7 under the following conditions.
SEF591X
OK or NG
OK
©
GO TO 7.
NG
©
Replace cooling fan relays.
7
CHECK COOLING FAN MOTORS-1 AND -2
Supply battery voltage between the following terminals and check operation.
SEF937X
OK or NG
OK
©
GO TO 8.
NG
©
Replace cooling fan motors.
8
CHECK INTERMITTENT INCIDENT
Perform “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-146.
©
INSPECTION END
DTC P0217 COOLANT OVERTEMPERATURE ENRICHMENT PROTECTION
Diagnostic Procedure (A/T Models) (Cont’d)
EC-308
Diagnostic Procedure (M/T Models)
NCEC0672
1
INSPECTION START
Do you have CONSULT-II?
Yes or No
Yes
©
GO TO 2.
No
©
GO TO 4.
2
CHECK COOLING FAN LOW SPEED OPERATION
With CONSULT-II
1. Disconnect cooling fan relay-2.
SEC573C
2. Turn ignition switch “ON”.
3. Perform “COOLING FAN” in “ACTIVE TEST” mode with CONSULT-II.
SEF784Z
4. Make sure that cooling fans-1 and -2 operate at low speed.
OK or NG
OK
©
GO TO 3.
NG
©
Check cooling fan low speed control circuit. (Go to PROCEDURE A, EC-315.)
GI
MA
EM
LC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0217 COOLANT OVERTEMPERATURE ENRICHMENT PROTECTION
Diagnostic Procedure (M/T Models)
EC-309
3
CHECK COOLING FAN HIGH SPEED OPERATION
With CONSULT-II
1. Turn ignition switch “OFF”.
2. Reconnect cooling fan relay-2.
3. Turn ignition switch “ON”.
4. Perform “COOLING FAN” in “ACTIVE TEST” mode with CONSULT-II.
SEF785Z
5. Make sure that cooling fan-1 operate at higher speed than low speed and cooling fan-2 operate at low speed.
OK or NG
OK
©
GO TO 6.
NG
©
Check cooling fan high speed control circuit. (Go to PROCEDURE B, EC-319.)
DTC P0217 COOLANT OVERTEMPERATURE ENRICHMENT PROTECTION
Diagnostic Procedure (M/T Models) (Cont’d)
EC-310
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