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Acura RSX Honda Integra. Manual - part 158

０１

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−

2005-2006 models

YES

11-338

Idle Control System

A/C Signal Circuit Troubleshooting (cont’d)

UNDER-HOOD FUSE/RELAY BOX
14P CONNECTOR

ACC (RED)

JUMPER WIRE

1. Start the engine.

2. Turn the blower switch on.

3. Turn the A/C switch on.

4. Check the A/C CLUTCH in the DATA LIST with the

HDS.

Go to step 5.

Do the A/C pressure switch circuit test

(see page 21-38).

5. Check the A/C system.

The air conditioning system circuit is OK.

Go to step 6.

6. Turn the ignition switch OFF.

7. Turn the ignition switch ON (II).

8. Activate the A/C CLUTCH in the INSPECTION

MENU with the HDS.

Do the A/C system test (see page 21-66).

Go to step 9.

9. Momentarily connect under-hood fuse/relay box

14P connector terminal No. 10 to body ground with
a jumper wire several times.

Repair open in the wire between the ECM/

PCM (E18) and the A/C clutch relay.

Update the ECM/PCM if it does not have the

latest software, or substitute a known-good ECM/
PCM (see page 11-6), then recheck. If the symptom/
indication goes away with a known-good ECM/PCM,
replace the original ECM/PCM (see page 11-284).

Wire side of female terminals

Is it ON?

Does the A/ C system oper ate?

Is ther e a clicking noise f r om the A/ C compr essor
clutch?

Is ther e clicking noise f r om the A/ C compr essor
clutch?

05/06/27 17:40:56 61S6M040_110_0338

０１

０２

０１

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−

2002-2004 models

YES

11-339

Alternator FR Signal Circuit Troubleshooting

ECM/PCM CONNECTORS

A (31P)

B (24P)

LG1
(BRN/YEL)

ALTF
(WHT/RED)

ECM/PCM CONNECTORS

A (31P)

B (24P)

LG1
(BRN/YEL)

ALTF
(WHT/RED)

ALTERNATOR 4P CONNECTOR

ALTF (WHT/RED)

JUMPER WIRE

1. Disconnect the alternator 4P connector.

2. Turn the ignition switch ON (II).

3. Measure voltage between ECM/PCM connector

terminals A24 and B13.

Go to step 4.

Go to step 13.

4. Turn the ignition switch OFF.

5. Reconnect the alternator 4P connector.

6. Start the engine. Hold the engine speed at

3,000 rpm without load (in Park or neutral) until the
radiator fan comes on, then let it idle.

7. Measure voltage between ECM/PCM connector

terminals A24 and B13.

The alternator signal is OK.

Go to step 8.

8. Turn the ignition switch OFF.

9. Disconnect ECM/PCM connector B (24P).

10. Disconnect the alternator 4P connector.

11. Connect alternator 4P connector terminal No. 4 to

body ground with a jumper wire.

(cont’d)

Wire side of female terminals

Is ther e about 5 V ?

Does the voltage decr ease when the headlights
and r ear window def ogger ar e tur ned on?

05/06/27 17:40:56 61S6M040_110_0339

０２

０３

−

YES

11-340

Idle Control System

Alternator FR Signal Circuit Troubleshooting (cont’d)

ECM/PCM CONNECTOR B (24P)

ALTF
(WHT/RED)

ECM/PCM CONNECTOR B (24P)

ALTF
(WHT/RED)

12. Check for continuity between body ground and

ECM/PCM connector terminal B13.

Test the alternator (see page 4-32).

Repair open in the wire between the ECM/

PCM (B13) and the alternator.

13. Turn the ignition switch OFF.

14. Disconnect ECM/PCM connector B (24P).

15. Check for continuity between body ground and

ECM/PCM connector terminal B13.

Repair short in the wire between the ECM/

PCM (B13) and the alternator.

Update the ECM/PCM if it does not have the

latest software, or substitute a known-good ECM/
PCM (see page 11-6), then recheck. If the symptom/
indication goes away with a known-good ECM/PCM,
replace the original ECM/PCM (see page 11-284).

Wire side of female terminals

Is ther e continuity?

05/06/27 17:40:57 61S6M040_110_0340

０１

Ｓ６Ｍ６ＡＺＨＡ２０３３６１１２９３１ＦＡＡＴ００

−

2005-2006 models

YES

11-341

ECM/PCM CONNECTOR B (24P)

ALTF (WHT/RED)

1. Start the engine, and let it idle.

2. Monitor the ALTERNATOR in the DATA LIST with

the HDS.

3. Check if the indicated percentage varies when the

headlight switch is on.

The alternator signal circuit is OK.

Go to step 4.

4. Turn the headlight switch and the ignition switch

OFF.

5. Jump the SCS line with the HDS.

6. Disconnect the alternator 4P connector.

7. Disconnect ECM/PCM connector B (24P).

8. Check for continuity between body ground and

ECM/PCM connector terminal B13.

Repair short in the wire between the ECM/

PCM (B13) and the alternator.

Update the ECM/PCM if it does not have the

latest software, or substitute a known-good ECM/
PCM (see page 11-6), then recheck. If the symptom/
indication goes away with a known-good ECM/PCM,
replace the original ECM/PCM (see page 11-284).

Wire side of female terminals

Does the per centage var y?

Is ther e continuity?

05/06/27 17:40:57 61S6M040_110_0341

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