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JimJim
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15 Posts
Discussion Starter · #1 ·
Repeatedly getting PGM FI warning so using an OBD2 diagnostic tool it came up with P1704 which is a manufacturer specific code (denoted by the 1 in the code) but searching through their list it is not there but there is a P0704 (clutch sensor) is this the same?
 

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Premium Member
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DTC Troubleshooting: P1704 (175)
DTC P1704:
Clutch Pedal Position Switch A/B Circuit Incorrect Correlation

NOTE: Before you troubleshoot, record all freeze data and review the general troubleshooting information.

1.
Turn the ignition switch ON (II).

2.
Check CLUTCH PEDAL POSITION SWITCH A in the DATA LIST with the HDS.
Is OFF indicated?

YES - Go to 3.

NO - Go to 5.

3.
Press the clutch pedal.

4.
Check CLUTCH PEDAL POSITION SWITCH B in the DATA LIST with the HDS.
Is ON indicated?

YES - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at clutch pedal position switch A, clutch pedal position switch B and the ECM.n

NO - Go to 10.

5.
Turn the ignition switch OFF, and wait 1 minute.

6.
Disconnect clutch pedal position switch A 2P connector.

7.
Disconnect ECM connector No. 2 (58P).

8.
Check for continuity between clutch pedal position switch A 2P connector terminal No. 1 and body ground.

Is there continuity?

YES - Repair short in the wire between clutch pedal position switch A and ECM connector No. 2 terminal No. 40, then go to 15.

NO - Go to 9.

9.
Check clutch pedal position switch A.
Is clutch pedal position switch A OK?

YES - Go to 20.

NO - Adjust or replace clutch pedal position switch A, then go to 15.

10.
Turn the ignition switch OFF, and wait 1 minute.

11.
Disconnect clutch pedal position switch B 3P connector.

12.
Disconnect ECM connector No. 2 (58P).

13.
Check for continuity between clutch pedal position switch B 3P connector terminal No. 2 and body ground.

Is there continuity?

YES - Repair short in the wire between clutch pedal position switch B and ECM connector No. 2 terminal No. 28, then go to 15.

NO - Go to 14.

14.
Check clutch pedal position switch B.
Is clutch pedal position switch B OK?
YES - Go to 20.

NO - Adjust or replace clutch pedal position switch B, then go to 15.

15.
Turn the ignition switch OFF.

16.
Reconnect all connectors.

17.
Turn the ignition switch ON (II).

18.
Reset the ECM with the HDS.

19.
Check for Temporary DTCs or DTCs with the HDS.
Are any Temporary DTCs or DTCs indicated?

YES - If DTC P1704 is indicated, check for poor connections or loose terminals at clutch pedal position switch A, clutch pedal position switch B and the ECM, then go to 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.

NO - Troubleshooting is complete.n

20.
Update the ECM if it does not have the latest software, or substitute a known-good ECM.

21.
Check for Temporary DTCs or DTCs with the HDS.
Are any Temporary DTCs or DTCs indicated?

YES - If DTC P1704 is indicated, check for poor connections or loose terminals at clutch pedal position switch A, clutch pedal position switch B and the ECM, then go to 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.

NO - If the ECM was updated, troubleshooting is complete. If the ECM was substituted, replace the original ECM.
 

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JimJim
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15 Posts
Discussion Starter · #3 ·
Many thanks only expected a yes or no.

Not a mechanic so what is HDS (number 2 your list) and where are switches A & B (number 2 & 4) and from what DATA list (2&4), are you referring to some manual? I have tried to get a service manual but with no luck for my car.

Where is the ECM located (number 7)?

How do I check the continuity is this by putting a wire or guage across the terminals (number 8)?

As you can see from above I am no mechanic but working blind without a manual is beyond me.
 
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