Mazda CX-9 Grand Touring. Manual - part 253

 

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Mazda CX-9 Grand Touring. Manual - part 253

 

 

No

Go to the next step.

3

VERIFY RELATED PENDING CODE OR STORED 
DTC
  

Verify the related PENDING CODE or stored 
DTCs.  

Are other DTCs present?  

Yes

Go to appropriate DTC inspection. 
(See DTC TABLE [MZI-3.7].)

No

Go to the next step.

4

INSPECT FUEL PUMP RELAY CONNECTOR FOR 
POOR CONNECTION
  

Turn the ignition switch off.  

Disconnect the fuel pump relay.  

Inspect for poor connection (such as 
damaged/pulled-out pins, corrosion).  

Are there malfunction?  

Yes

Repair or replace suspected part, 
then go to Step 9.

No

Go to the next step.

5

INSPECT PCM CONNECTOR FOR POOR 
CONNECTION
  

Turn the ignition switch off.  

Disconnect PCM connector.  

Inspect for poor connection (such as 
damaged/pulled-out pins, corrosion).  

Are there malfunction?  

Yes

Repair or replace suspected part, 
then go to Step 9.

No

Go to the next step.

6

INSPECT FUEL PUMP RELAY POWER SUPPLY 
CIRCUIT FOR OPEN CIRCUIT
  

Turn the ignition switch to the ON position (Engine 
off).  

Measure voltage between fuel pump relay 
connector terminal C (wiring harness-side) and 
body ground.  

Is voltage B+?  

Yes Go to the next step.

No

Repair or replace suspected part, 

then go to Step 9.

7

INSPECT FUEL PUMP MONITOR CIRCUIT FOR 
OPEN CIRCUIT
  

Turn the ignition switch off.  

Inspect continuity between fuel pump relay 
terminal D (wiring harness-side) and PCM terminal 
1Q (wiring harness-side).  

Is there continuity?  

Yes Go to the next step.

No

Repair or replace suspected part, 

then go to Step 9.

8

INSPECT FUEL PUMP RELAY  

Inspect the fuel pump relay. (See RELAY 

Yes

Replace the fuel pump relay, then 
go to the next step.

 

2008 Mazda CX-9 Grand Touring 

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:08:36 AM

Page 145 

© 2005 Mitchell Repair Information Company, LLC. 

DTC P0232 [MZI-3.7] 

DTC P0232 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES 

INSPECTION .)  

Is there any malfunction?  

No

Go to the next step.

9

VERIFY TROUBLESHOOTING OF DTC P0231 
HAS BEEN COMPLETED
  

Verify that all disconnected connectors 
reconnected.  

Clear DTC from memory using M-MDS.  

Start the engine.  

Perform the "KOEO/KOER self-test" (See 
KOEO/KOER SELF TEST [MZI-3.7].)  

Is same DTC present?  

Yes

Replace the PCM, then go to the 
next step.

No

Go to the next step.

10

VERIFY AFTER REPAIR PROCEDURE  

Perform the "AFTER REPAIR PROCEDURE". 
(See AFTER REPAIR PROCEDURE [MZI-
3.7]
.)  

Are any DTCs present?  

Yes

Go to the applicable DTC 
inspection. (See DTC TABLE 
[MZI-3.7]
.)

No

Troubleshooting completed.

DTC P0232

FP secondary circuit high

DETECTION 

CONDITION 

The PCM monitors the fuel pump monitor circuit. This test fails when the PCM detects 
voltage on the fuel pump monitor circuit while the fuel pump is commanded OFF. The 
fuel pump monitor circuit is wired to a pull-up voltage inside the PCM. The fuel pump 
monitor circuit goes high if, with the key ON, engine OFF and the fuel pump 
commanded OFF, the fuel pump monitor/fuel pump power circuit loses its path to 
ground through the fuel pump. The fuel pump monitor circuit also goes high if the fuel 
pump monitor/fuel pump power circuit is short to voltage.  

POSSIBLE 

CAUSE 

Fuel pump relay malfunction  

Fuel pump malfunction  

Connector or terminal malfunction  

Open circuit between fuel pump terminal B and PCM terminal 1Q  

Fuel pump connector for poor connection  

Short to power supply between fuel pump terminal B and PCM terminal 1Q  

Short to power supply between fuel pump relay terminal D and PCM terminal 1Q  

 

2008 Mazda CX-9 Grand Touring 

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:08:36 AM

Page 146 

© 2005 Mitchell Repair Information Company, LLC. 

DIAGNOSTIC PROCEDURE 

DTC P0232 (MZI-3.7) DIAGNOSTIC PROCEDURE 

STEP

INSPECTION

ACTION

1

VERIFY FREEZE FRAME DATA HAS BEEN 
RECORDED
  

Has FREEZE FRAME DATA been recorded?  

Yes Go to the next step.

No

Record FREEZE FRAME DATA 

on the repair order, then go to the 

next step.

2

VERIFY RELATED REPAIR INFORMATION 
AVAILABILITY
  

Verify related Service Bulletins availability.  

Is any related Service Bulletins available?  

Yes

Perform repair or diagnosis 
according to available Service 
Bulletins. 

If vehicle is not repaired, go 
to the next step.  

 

2008 Mazda CX-9 Grand Touring 

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:08:36 AM

Page 147 

© 2005 Mitchell Repair Information Company, LLC. 

No

Go to the next step.

3

VERIFY RELATED PENDING CODE OR STORED 
DTC
  

Verify the related PENDING CODE or stored 
DTCs.  

Are other DTCs present?  

Yes

Go to appropriate DTC inspection. 
(See DTC TABLE [MZI-3.7].)

No

Go to the next step.

4

INSPECT FUEL PUMP RELAY CONNECTOR 
FOR POOR CONNECTION
  

Turn the ignition switch off.  

Disconnect the fuel pump relay.  

Inspect for poor connection (such as 
damaged/pulled-out pins, corrosion).  

Are there malfunction?  

Yes

Repair or replace suspected part, 
then go to Step 10.

No

Go to the next step.

5

INSPECT PCM CONNECTOR FOR POOR 
CONNECTION
  

Turn the ignition switch off.  

Disconnect PCM connector.  

Inspect for poor connection (such as 
damaged/pulled-out pins, corrosion).  

Are there malfunction?  

Yes

Repair or replace suspected part, 
then go to Step 10.

No

Go to the next step.

6

INSPECT FUEL PUMP MONITOR CIRCUIT FOR 
SHORT TO POWER SUPPLY
  

Turn the ignition switch to the ON position 
(Engine off).  

Measure voltage between the following terminals: 

Fuel pump relay terminal D (wiring harness-
side) and body ground  

fuel pump terminal B (wiring harness-side) 
and body ground  

Is voltage B+?  

Yes

Repair or replace suspected part, 
then go to Step 10.

No

Go to the next step.

7

INSPECT FUEL PUMP MONITOR CIRCUIT FOR 
OPEN CIRCUIT
  

Turn the ignition switch off.  

Inspect continuity between fuel pump terminal B 
(wiring harness-side) and PCM terminal 1Q 
(wiring harness-side).  

Is there continuity?  

Yes Go to the next step.

No

Repair or replace suspected part, 

then go to Step 10.

 

2008 Mazda CX-9 Grand Touring 

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:08:36 AM

Page 148 

© 2005 Mitchell Repair Information Company, LLC. 

 

 

 

 

 

 

 

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