Acura RSX Honda Integra. Manual — part 159

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2002-2004 models

YES

NO

YES

NO

YES

NO

11-342

Idle Control System

PSP Switch Signal Circuit Troubleshooting

ECM/PCM CONNECTORS

A (31P)

E (31P)

LG1 (BRN/YEL)

PSPSW
(LT GRN/BLK)

ECM/PCM CONNECTORS

A (31P)

E (31P)

LG1 (BRN/YEL)

PSPSW
(LT GRN/BLK)

PSP SWITCH 2P CONNECTOR

PSPSW
(LT GRN/BLK)

GND (BLK)

JUMPER
WIRE

ECM/PCM CONNECTORS

A (31P)

E (31P)

LG1 (BRN/YEL)

PSPSW
(LT GRN/BLK)

1. Turn the ignition switch ON (II).

2. Measure voltage between ECM/PCM connector

terminals A24 and E16.

Go to step 3.

Go to step 6.

3. Start the engine.

4. Turn the steering wheel to the full lock position.

5. Measure voltage between ECM/PCM connector

terminals A24 and E16.

The PSP switch signal is OK.

Go to step 11.

6. Turn the ignition switch OFF.

7. Disconnect the PSP switch 2P connector.

8. Turn the ignition switch ON (II).

9. At the harness side, connect PSP switch 2P

connector terminals No. 1 and No. 2 with a jumper
wire.

10. Measure voltage between ECM/PCM connector

terminals A24 and E16.

Replace the PSP switch.

Check for an open in the wire between the

ECM/PCM (E16) and the PSP switch, or an open in
wire between the PSP switch and G451.

11. Turn the ignition switch OFF.

12. Disconnect the PSP switch 2P connector.

13. Turn the ignition switch ON (II).

Wire side of female terminals

Wire side of female terminals

Wire side of female terminals

Wire side of female terminals

Is ther e less than 1.0 V ?

Is ther e batter y voltage?

Is ther e less than 1.0 V ?

05/06/27 17:40:57 61S6M040_110_0342

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YES

NO

YES

NO

11-343

ECM/PCM CONNECTORS

A (31P)

E (31P)

LG1 (BRN/YEL)

PSPSW
(LT GRN/BLK)

ECM/PCM CONNECTOR E (31P)

PSPSW
(LT GRN/BLK)

14. Measure voltage between ECM/PCM connector

terminals A24 and E16.

Replace the PSP switch.

Go to step 15.

15. Turn the ignition switch OFF.

16. Disconnect ECM/PCM connector E (31P).

17. Check for continuity between body ground and

ECM/PCM connector terminal E16.

Repair short in the wire between ECM/PCM

(E16) and the PSP switch.

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

Wire side of female terminals

Is ther e batter y voltage?

Is ther e continuity?

05/06/27 17:40:57 61S6M040_110_0343

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Ｓ６Ｍ６ＡＺＨＡ２０３３６１４７０２２ＦＡＡＴ００

−

−

−

−

−

−

−

−

2005-2006 models

YES

NO

YES

NO

YES

NO

YES

NO

11-344

Idle Control System

PSP Switch Signal Circuit Troubleshooting (cont’d)

PSP SWITCH 2P CONNECTOR

PSPSW
(LT GRN/BLK)

1. Start the engine, and let it idle.

2. Align the steering wheel straight ahead.

3. Check the PSP SWITCH in the DATA LIST with the

HDS.

Go to step 4.

Go to step 12.

4. Turn the steering wheel to the full lock position.

5. Check the PSP SWITCH in the DATA LIST with the

HDS.

The PSP switch signal circuit is OK.

Go to step 6.

6. Disconnect the PSP switch 2P connector.

7. Check the PSP SWITCH in the DATA LIST with the

HDS.

Replace the PSP switch.

Go to step 8.

8. Turn the ignition switch OFF.

9. Jump the SCS line with the HDS.

10. Disconnect ECM/PCM connector E (31P).

11. Check for continuity between PSP switch 2P

connector terminal No. 1 and body ground.

Repair short in the wire between the ECM/

PCM (E16) and the PSP switch.

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).

12. Turn the ignition switch OFF.

13. Disconnect the PSP switch 2P connector.

Wire side of female terminals

Does it indicate ON?

Does it change to OF F ?

Does it change to OF F ?

Is ther e continuity?

05/06/27 17:40:58 61S6M040_110_0344

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０４

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−

−

−

−

−

−

YES

NO

YES

NO

YES

NO

11-345

PSPSW (LT GRN/BLK)

GND (BLK)

JUMPER WIRE

PSP SWITCH 2P CONNECTOR

PSPSW (LT GRN/BLK)

JUMPER WIRE

PSP SWITCH 2P CONNECTOR

ECM/PCM CONNECTOR E (31P)

PSPSW
(LT GRN/BLK)

PSP SWITCH 2P CONNECTOR

GND (BLK)

14. Connect PSP switch 2P connector terminals No. 1

and No. 2 with a jumper wire, then start the engine.

15. Check the PSPSW in the DATA LIST with the HDS.

Replace the PSP switch.

Go to step 16.

16. Turn the ignition switch OFF.

17. Remove the jumper wire from the PSP switch 2P

connector.

18. Jump the SCS line with the HDS.

19. Disconnect ECM/PCM connector E (31P).

20. Connect PSP switch 2P connector terminal No. 1 to

body ground with a jumper wire.

21. Check for continuity between body ground and

ECM/PCM connector terminal E16.

Go to step 22.

Repair open in the wire between the PSP

switch and the ECM/PCM (E16).

22. Check for continuity between PSP switch 2P

connector terminal No. 2 and body ground.

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).

Repair open in the wire between the PSP

switch and G451.

Wire side of female terminals

Wire side of female terminals

Wire side of female terminals

Wire side of female terminals

Does it change to ON?

Is ther e continuity?

Is ther e continuity?

05/06/27 17:40:58 61S6M040_110_0345