Hyundai Santa Fe (2006 year). Manual — part 603
FLA -478
FUEL SYSTEM
4)
Measure the voltage between terminal 4 of TPS harness connector and chassis ground.
Specification : Approx. 5V
5)
Is the measured voltage within specification ?
YES
▶ Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deteriora-
tion, or damage. Repair as necessary and go to "Verification of Vehicle Repair" procedure.
NO
▶ Go to "Check short in power harness" as follows.
2.
Check short in power harness
1)
IG "OFF".
2)
Disconnect TPS connector and PCM connector.
3)
Measure the resistance between terminal 4 and 5 of TPS harness connector.
4)
Measure the resistance between terminal 4 and 8 of TPS harness connector.
5)
Measure the resistance between terminal 4 and 6 of TPS harness connector.
6)
Measure the resistance between terminal 4 and 1 of TPS harness connector.
Specification : Infinite
7)
Is the measured resistance within specification ?
YES
▶ Substitute with a known - good PCM and check for proper operation.
▶ If the problem is corrected, replace PCM and go to "Verification of Vehicle Repair" procedure.
NO
▶ Repair Short in power circuit and go to "Verification of Vehicle Repair" procedure.
※ Procedure of ETS Initialization
1. Erase the trouble codes on PCM
2. Turn the ignition key off and keep this condition until the main relay is turned off.(It will takes 10 second)
3. Turn ignition key on more than 1second to record the throttle motor position on the EEPROM
VERIFICATION OF VEHICLE REPAIR
E34B8F1E
After a repair, it is essential to verify that the fault has been corrected.
1.
Monitor and record the Freeze Frame Data for the Diagnostic Trouble Code(DTC) which has been diagnosed.
2.
Using a Scantool, Clear the DTCs
3.
Operate the vehicle within conditions noted in the freeze frame data or enable conditions
4.
Monitor that all rediness test have been verified as " Complete "
DTC TROUBLESHOOTING PROCEDURES
FLA -479
5.
Are any DTCs present ?
YES
▶ Go to the applicable troubleshoooting procedure.
NO
▶ System is performing to specification at this time.
FLA -480
FUEL SYSTEM
DTC P0646 A/C CLUTCH RELAY CONTROL CIRCUIT LOW
GENERAL DESCRIPTION
EDDD5D8D
The A/C clutch relay is activated if the A/C switch is operated while the blower is running and system operation is enabled
by the ECM. When A/C is requested, the Engine Control Module(ECM) provides a ground path to the A/C clutch relay
control circuit. When the relay circuit is grounded, the A/C clutch relay is energized. The ECM delays grounding the relay
circuit for a short time, so the ECM can adjust the engine idle speed for the additional load. The ECM will temporarily
de-energized the A/C clutch relay for one or more of the following conditions:
-
Full acceleration when the throttle is at WOT.(Wide Open Throttle)
-
Risk of overheating: Engine coolant temp. exceeds threshold value
-
A/C system pressure exceeds threshold value
-
Engine starting
DTC DESCRIPTION
E104ED52
PCM monitors inputted voltage through A/C compressor relay. Checking voltage every 10 sec. under detecting condition,
if the voltage lower than the specified value is detected for more than 5 sec., PCM sets P0646.
DTC DETECTING CONDITION
EC2A54B9
Item
Detecting Condition
Possible cause
DTC Strategy
• Detects circuit short to low voltage
Enable Conditions
• After 0.5 sec under conditions below
• No DTC exists
• Engine works
• 11V ≤ Battery voltage ≤ 16V
Threshold value
• Open or short to ground
Diagnosis Time
• Continuous
(More than 5 seconds failure for every
10 seconds test)
MIL On Condition
• DTC only (NO MIL ON)
• Poor connection
• Open or short to ground
in A/C relay circuit
• Faulty A/C relay
• Faulty PCM
SPECIFICATION
E4795868
Coil Resistance
70Ω ~ 120Ω
DTC TROUBLESHOOTING PROCEDURES
FLA -481
SCHEMATIC DIAGRAM
E7EB010D
PCM
C30-A
PCM (C30-A)
[CIRCUIT DIAGRAM]
[HARNESS CONNECTOR]
Terminal
Connected to
Function
1
2
Battery
COMPRESSOR Supply
Power Supply (B+)
A/C COMPRESSOR
3
A/C comp. relay control
PCM C30-A (64)
4
Power Supply (B+)
Battery
3 2 1
6 5 4
9
21
23
16 15
17
18
19
38 37 36 35 34
39
40
26 25 24
22
27
28
29
46
47
48
49
68 67
69
70
42 41
43
44
62 61
63
64
66 65
45
56
57
58
59
60
78 77 76 75 74
79
80
52 51 50
53
72 71
73
54
55
32 31 30
33
20
14 13 12 11 10
8 7
4
1
3
2
Battery
A/C COMP. RELAY
1
3
4
2
A/C
COMPRESSOR
64 - A/C comp.
relay control
[CONNECTION INFORMATION]
SCMF16392L
MONITOR DTC STATUS
E94C88FB
1.
Check DTC Status
1)
Connect scantool to Data Link Connector(DLC).
2)
IG "ON".
3)
Select "Diagnostic Trouble Codes(DTCs)" mode, and then Press F4(DTAL) to check DTC’s information from the
DTCs menu
4)
Read "DTC Status" parameter.
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