2001 Honda Accord EX ENGINE PERFORMANCE' 'Basic Diagnostic Procedures

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Angelina Perkins
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1 2001 Honda EX IGNITION CHECKS Ignition Coil Test ( 2.3L & CR-V) 1. Turn ignition off. Remove distributor cap, rotor and leak cover. Remove primary leads from ignition coil. Using an ohmmeter, check primary resistance between ignition coil terminals "A+" and "B-". See Fig. 12. Resistance should be as specified. See IGNITION COIL RESISTANCE table. 2. Check secondary resistance between ignition coil terminal "A+" and secondary output terminal (ignition coil tower). See IGNITION COIL RESISTANCE table. If readings are not as specified, replace ignition coil.

2 2001 Honda EX Fig. 12: Identifying Ignition Coil Terminals ( 2.3L & CR-V) Courtesy of AMERICAN HONDA MOTOR CO., INC. Ignition Control Module (ICM) Input Test ( 2.3L) 1. Turn ignition off. Remove distributor cap, rotor and leak cover. Disconnect wires from ICM. See Fig. 14 or Fig. 15. Turn ignition on. Check for voltage between body ground and ICM Black/Yellow wire. If battery voltage exists, go to next step. If battery voltage does not exist, check for open in Black/Yellow wire between ignition switch and ICM. See WIRING DIAGRAMS article.

3 2001 Honda EX 2. Ensure ignition is on. Check for voltage between body ground and ICM White/Black wire (White/Blue wire on F23A5 engine). See Fig. 14 or Fig. 15. If battery voltage exists, go to next step. If battery voltage does not exist, check ignition coil operation. See IGNITION COIL TEST (ACCORD 2.3L & CR-V). Replace ignition coil as necessary. If ignition coil is okay, check for open in White/Black wire (White/Blue wire on F23A5 engine) between ICM and ignition coil. 3. Turn ignition off. Disconnect PCM connector "B" (25-pin connector). Check continuity of Yellow/Green wire between PCM connector "B" (25-pin connector) terminal No. 13 and ICM. If continuity exists, go to next step. If continuity does not exist, repair open in Yellow/Green wire. 4. Check continuity between body ground and Yellow/Green wire. If continuity exists, check for short to ground in Yellow/Green wire. If continuity does not exist, wiring is okay at this time. Turn ignition off, and reconnect PCM connector "B" (25-pin connector). Replace ICM. IDLE SPEED & IGNITION TIMING For further information on idle speed adjustments and specifications, see ON-VEHICLE ADJUSTMENTS article. IDLE SPEED SPECIFICATIONS (ACCORD, CIVIC, INSIGHT, ODYSSEY & S2000) Application Step "A" RPM Step "B" RPM 2.3L L Civic Insight Odyssey S IDLE SPEED SPECIFICATIONS (CR-V) Step "A" RPM Step "B" RPM Step "C" RPM Step "D" RPM IDLE SPEED SPECIFICATIONS (PRELUDE) Step "A" RPM Step "B" RPM Step "C" RPM Step "D" RPM IGNITION TIMING (DEGREES BTDC - RED RPM) Application (1) Man. Trans. (2) Auto. Trans. 2.3L (3) (3) L... (3) Civic (3) (3) CR-V (4) (4)

4 2001 Honda EX Insight (3) Odyssey... (3) Prelude (4) (4) S2000 (3) (1) With manual transmission in Neutral. (2) With automatic transmission in Neutral or Park. (3) Install scan tool to Data Link Connector (DLC) before checking timing. (4) Install Service Check Connector Tool (07PAZ ) to service check connector before checking timing. IGNITION COIL RESISTANCE - 68 F (20 C) Application Primary Secondary F23A1 & F23A ,800-25,200 F23A ,800-19,200 CR-V ,800-19,200 Prelude ,400-21,600 IDLE SPEED SPECIFICATIONS (ACCORD, CIVIC, INSIGHT, ODYSSEY & S2000) Application Step "A" RPM Step "B" RPM 2.3L L Civic Insight Odyssey S

5 2001 Honda EX 2001 ENGINE PERFORMANCE' 'System & Component Testing 1. Place transmission in Neutral or Park position (A/T) or depress clutch pedal (M/T). Turn ignition switch to START position. Backprobing, measure voltage between PCM connector "A" (32-pin connector) terminal No. 24 (Blue/Orange wire) and PCM connector "B" (25-pin connector) terminal No. 20 (Brown/Black wire). See Fig. 36 and Fig. 56. If battery voltage does not exist, go to next step. If battery voltage exists, problem is intermittent. Starter switch signal is okay at this time. 2. Inspect No. 13 (7.5-amp) fuse in driver's underdash fuse/relay box located behind left kick panel. See STARTER SIGNAL FUSE IDENTIFICATION table. If fuse is okay, repair open in Blue/Orange wire between driver's underdash fuse/relay box and PCM connectors. If fuse is not okay, repair short in Blue/Orange wire between driver's underdash fuse/relay box, PCM and PGM-FI main relay connectors. See WIRING DIAGRAMS article. Replace fuse. STARTER SIGNAL FUSE IDENTIFICATION Model Fuse No. Fuse Name Amperage Location & Odyssey No. 13 STARTER SIGNAL 7.5-Amp Driver's Underdash Fuse/Relay Box CR-V No. 31 STARTER SIGNAL 7.5-Amp Underdash Fuse/Relay Box Insight No. 9 STARTER SIGNAL 7.5-Amp Underdash Fuse/Relay Box Prelude No. 2 STARTER SIGNAL 7.5-Amp Underdash Fuse/Relay Box S2000 No. 21 STARTER SIGNAL 7.5-Amp Underdash Fuse/Relay Box

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1998 Acura 3.5RL. F - BASIC TESTING' '1998 ENGINE PERFORMANCE Acura - Basic Diagnostic Procedures FUEL PUMP 1. Remove fuel tank filler cap. Listen for fuel pump operation noise at fuel tank filler. Fuel pump should operate for 2 seconds after ignition switch is turned on. If fuel pump operates as specified,