'01 Model

Turn the ignition switch ON (II).
Measure voltage between data link connector (DLC) terminal No. 16 and body ground.

Fig 1: Measuring Voltage Between Data Link Connector (DLC) Terminal No. 16 & Body Ground
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. 16 and the ACGS (15A) 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 4.
2. NO: Repair open in the wire between DLC terminal No. 4 and G501.
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 5.
2. NO: Repair open in the wire between DLC terminal No. 5 and G101.
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 10.
2. NO: Go to step 6.
Turn the ignition switch OFF.
Disconnect PCM connector E (31P).
Check for continuity between DLC terminal No. 7 and body ground.

Fig 5: Checking For 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 PCM (E27).
2. NO: Go to step 9.
Check for continuity between DLC terminal No. 7 and PCM terminal E27.

Fig 6: Checking For Continuity Between DLC Terminal No. 7 & PCM Terminal E27
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?
1. YES: Substitute a known-good PCM and recheck (see HOW TO SUBSTITUTE THE PCM FOR TESTING PURPOSE ). If the symptom/indication goes away with a known-good PCM, replace the original PCM.
2. NO: Repair open in the wire between DLC terminal No. 7 and the PCM (E27).
Turn the ignition switch OFF.
Disconnect 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 O V?
1. YES: Substitute a known-good PCM and recheck (see HOW TO SUBSTITUTE THE PCM FOR TESTING PURPOSE ). If the symptom/indication goes away with a known-good PCM, replace the original PCM.
2. NO: Repair short to power in the wire between DLC terminal No. 7 and PCM (E27).