2006 Model

Measure voltage between DLC terminal No. 16 and body ground.

Fig 1: Measuring Voltage Between DLC Terminal No. 16 & Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?
1. YES - Go to step 2.
2. NO - Repair open in the wire between DLC terminal No. 16 and the No. 8 Fl ECU (ECM/PCM) (15 A) fuse in the under-hood fuse/relay box.
Measure voltage between DLC terminals No. 4 and No. 16.

Fig 2: Measuring Voltage Between DLC Terminals No. 4 & No. 16
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?
1. YES - Go to step 3.
2. NO - Repair open in the wire between DLC terminal No. 4 and body ground (G503).
Measure voltage between DLC terminals No. 5 and No. 16.

Fig 3: Measuring Voltage Between DLC Terminals No. 5 & No. 16
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?
1. YES - Go to step 4.
2. NO - Repair open in the wire between DLC terminal No. 5 and body ground (G503).
Turn the ignition switch ON (II).
Measure voltage between DLC terminals No. 5 and No. 7.

Fig 4: Measuring Voltage Between DLC Terminals No. 5 & No. 7
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there 8.5 V or more?
1. YES - Go to step 11.
2. NO - Go to step 6.
Turn the ignition switch OFF.
Jump the SCS line with the HDS.
Disconnect ECM/PCM connector E (31P).
Check for continuity between DLC terminal No. 7 and body ground.

Fig 5: Checking Continuity Between DLC Terminal No. 7 & Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?
1. YES - Repair short to ground in the wire between DLC terminal No. 7 and the ECM/PCM (E14). After repairing the wire, check for a DTC with the HDS and go to the indicated DTC's troubleshooting.
2. NO - Go to step 10.
Check for continuity between DLC terminal No. 7 and ECM/PCM terminal E14.

Fig 6: Checking Continuity Between DLC Terminal No. 7 & ECM/PCM Terminal E14
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?
1. YES - Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM (see HOW TO TROUBLESHOOT CIRCUITS AT THE ECM/PCM ), then recheck. If the symptom/ indication goes away with a known-good ECM/PCM, replace the original ECM/PCM (see ECM/PCM REPLACEMENT ).
2. NO - Repair open in the wire between DLC terminal No. 7 and the ECM/PCM (E14). After repairing the wire, check for Temporary DTCs or DTCs with the HDS, and go to the indicated DTC's troubleshooting.
Turn the ignition switch OFF.
Jump the SCS line with the HDS.
Disconnect ECM/PCM connector E (31P).
Turn the ignition switch ON (II).
Measure voltage between DLC terminals No. 5 and No. 7.

Fig 7: Measuring Voltage Between DLC Terminals No. 5 & No. 7
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there about 0 V?
1. YES - Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM (see HOW TO TROUBLESHOOT CIRCUITS AT THE ECM/PCM ), then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM (see ECM/PCM REPLACEMENT ).
2. NO - Go to step 16.
Turn the ignition switch OFF.
Disconnect the VSA modulator-control unit 47P connector.
Check for continuity between VSA modulator-control unit 47P connector terminal No. 32 and body ground.

Fig 8: Checking Continuity Between VSA Modulator-Control Unit 47P Connector Terminal No. 32 & Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?
1. YES - Repair short to power in the wire between DLC terminal No. 7 and the ECM/PCM (E14). After repairing the wire, check for Temporary DTCs or DTCs with the HDS. If any Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.
2. NO - Repair open in the wire between the VSA modulator-control unit and G203. After repairing the wire, check for Temporary DTCs or DTCs with the HDS. If any Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.